Finding the Fourth Proportional to 117,168.30, 161,691.45 and 63,452.09
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Solution
The fourth proportional to 117,168.30, 161,691.45 and 63,452.09 is: 87,563.45
Step by Step Solution
- Step 1: Write the proportion equation
117,168.30 : 161,691.45 = 63,452.09 : x - Step 2: Convert to fraction form
117,168.30/161,691.45 = 63,452.09/x - Step 3: Cross multiply
117,168.30x = 161,691.45 × 63,452.09 - Step 4: Simplify right side
117,168.30x = 10,259,660,437.63 - Step 5: Solve for x
x = 10,259,660,437.63/117,168.30 - Step 6: Final answer
x = 87,563.45
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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.