Finding the Fourth Proportional to 129,679,116.75, 178,958,594.16 and 70,940,520.70
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Solution
The fourth proportional to 129,679,116.75, 178,958,594.16 and 70,940,520.70 is: 97,898,691.56
Step by Step Solution
- Step 1: Write the proportion equation
129,679,116.75 : 178,958,594.16 = 70,940,520.70 : x - Step 2: Convert to fraction form
129,679,116.75/178,958,594.16 = 70,940,520.70/x - Step 3: Cross multiply
129,679,116.75x = 178,958,594.16 × 70,940,520.70 - Step 4: Simplify right side
129,679,116.75x = 12,695,415,853,002,984 - Step 5: Solve for x
x = 12,695,415,853,002,984/129,679,116.75 - Step 6: Final answer
x = 97,898,691.56
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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.