Question 1131624
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A building is casting a 140 {{{highlight(cross(foot))}}} <U>feet</U>  {{{highlight(cross(casting))}}} <U>shadow</U>. 
At the same time a nearby post is casting a 10 {{{highlight(cross(foot))}}} <U>feet</U> shadow. 
If the post is 18 feet tall how tall is the building ?
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<pre>
Use the proportion


    {{{x/140}}} = {{{18/10}}}.


From the proportion, find  x = {{{(140*18)/10}}} = 14*18 = 252 feet.    <U>ANSWER</U>
</pre>

Solved.


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