Finding the Fourth Proportional to 117,220.13, 161,763.84 and 63,505.52
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Solution
The fourth proportional to 117,220.13, 161,763.84 and 63,505.52 is: 87,637.65
Step by Step Solution
- Step 1: Write the proportion equation
117,220.13 : 161,763.84 = 63,505.52 : x - Step 2: Convert to fraction form
117,220.13/161,763.84 = 63,505.52/x - Step 3: Cross multiply
117,220.13x = 161,763.84 × 63,505.52 - Step 4: Simplify right side
117,220.13x = 10,272,896,776.40 - Step 5: Solve for x
x = 10,272,896,776.40/117,220.13 - Step 6: Final answer
x = 87,637.65
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.