\

 

\

\

Step 1 :

\

nth term of a geometric sequence :

\

The nth term of a geometric sequence is \"\".

\

Where \"\" is the first term and r  is the common ratio.

\

Step 2 :

\

The initial term is \"\" and common ratio is \"\".

\

The nth term of a geometric sequence is \"\"

\

Substitute \"\" and \"\" in above equation.

\

\"\"

\

The nth term of a geometric sequence is \"\"

\

Step 2 :

\

Substitute \"\" in \"\"

\

\"\"

\

The fifth term of a geometric sequence is \"\"

\

Solution : 

\

The nth term of a geometric sequence is \"\"

\

The fifth term of a geometric sequence is \"\"