package management - How can I slove postgresql-9.3-postgis-2.1 unmet dependencies Ubuntu 14.04

I've installed PostgreSQL v9.3 (database) on Ubuntu 14.04 and I'm currently attempting to install the following:

sudo apt-get install postgresql-9.3-postgis-2.1

However I'm getting the following error:

The following packages have unmet dependencies:
postgresql-9.3-postgis-2.1 : Depends: libgdal1h (>= 1.9.0) but it is
not installable

Depends: libgeos-c1 (>= 3.4.2) but it is not going to be installed
Depends: liblwgeom-2.1.7 (>= 2.1.6) but it is not going to be installed
Depends: libproj0 (>= 4.8.0-1) but it is not installable E: Unable to correct problems, you have held broken
packages.

Please Note: I have already successfully installed the following:

sudo apt-get install postgresql-9.3 
sudo apt-get install postgresql-contrib-9.3 

sudo apt-get install postgresql-9.3-postgis-2.1-scripts

How can I solve this?

After some additional research I found the answer via the following questions
How do I resolve unmet dependencies after adding a PPA? which can be applied to this question as a solution.

In your terminal run

software-properties-gtk

Under Ubuntu Software tab, enable all the repositories

Next run

sudo apt-get update    
sudo apt-get upgrade

Finally run

sudo apt-get install  postgresql-9.3-postgis-2.1

Worked successfully for me I hope this helps someone with the same issue install postgresql-9.3-postgis-2.1 with unmet dependencies on Ubuntu 14.04