Finding the Fourth Proportional to 107,789.64, 161,470.14 and 84,306.12
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Solution
The fourth proportional to 107,789.64, 161,470.14 and 84,306.12 is: 126,291.55
Step by Step Solution
- Step 1: Write the proportion equation
107,789.64 : 161,470.14 = 84,306.12 : x - Step 2: Convert to fraction form
107,789.64/161,470.14 = 84,306.12/x - Step 3: Cross multiply
107,789.64x = 161,470.14 × 84,306.12 - Step 4: Simplify right side
107,789.64x = 13,612,920,999.26 - Step 5: Solve for x
x = 13,612,920,999.26/107,789.64 - Step 6: Final answer
x = 126,291.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.