Finding the Fourth Proportional to 98,839.96, 136,337.82 and 72,972.08
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Solution
The fourth proportional to 98,839.96, 136,337.82 and 72,972.08 is: 100,656.20
Step by Step Solution
- Step 1: Write the proportion equation
98,839.96 : 136,337.82 = 72,972.08 : x - Step 2: Convert to fraction form
98,839.96/136,337.82 = 72,972.08/x - Step 3: Cross multiply
98,839.96x = 136,337.82 × 72,972.08 - Step 4: Simplify right side
98,839.96x = 9,948,854,308.07 - Step 5: Solve for x
x = 9,948,854,308.07/98,839.96 - Step 6: Final answer
x = 100,656.20
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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.