Question 159584
Yes, first feet and inches to inches. 
You can keep feet over inches as long as you're consistent on both sides.
12 feet is to 69 inches as 30 feet is to x inches.
{{{12/69=30/x}}}
{{{x=(30*69)/12}}}
{{{x=172.5}}}
The flagpole is 172.5 inches tall or 14' 4.5" tall.