Finding the Fourth Proportional to 99,931,103.92, 137,894,306.56 and 55,269,979.08
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Solution
The fourth proportional to 99,931,103.92, 137,894,306.56 and 55,269,979.08 is: 76,266,699.15
Step by Step Solution
- Step 1: Write the proportion equation
99,931,103.92 : 137,894,306.56 = 55,269,979.08 : x - Step 2: Convert to fraction form
99,931,103.92/137,894,306.56 = 55,269,979.08/x - Step 3: Cross multiply
99,931,103.92x = 137,894,306.56 × 55,269,979.08 - Step 4: Simplify right side
99,931,103.92x = 7,621,415,438,822,307 - Step 5: Solve for x
x = 7,621,415,438,822,307/99,931,103.92 - Step 6: Final answer
x = 76,266,699.15
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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.