Finding the Fourth Proportional to 117,133.62, 161,644.18 and 63,418.63
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Solution
The fourth proportional to 117,133.62, 161,644.18 and 63,418.63 is: 87,517.59
Step by Step Solution
- Step 1: Write the proportion equation
117,133.62 : 161,644.18 = 63,418.63 : x - Step 2: Convert to fraction form
117,133.62/161,644.18 = 63,418.63/x - Step 3: Cross multiply
117,133.62x = 161,644.18 × 63,418.63 - Step 4: Simplify right side
117,133.62x = 10,251,251,476.31 - Step 5: Solve for x
x = 10,251,251,476.31/117,133.62 - Step 6: Final answer
x = 87,517.59
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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.