Finding the Fourth Proportional to 88,564,768.70, 132,847,153.05 and 78,487,072.70
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Solution
The fourth proportional to 88,564,768.70, 132,847,153.05 and 78,487,072.70 is: 117,730,609.05
Step by Step Solution
- Step 1: Write the proportion equation
88,564,768.70 : 132,847,153.05 = 78,487,072.70 : x - Step 2: Convert to fraction form
88,564,768.70/132,847,153.05 = 78,487,072.70/x - Step 3: Cross multiply
88,564,768.70x = 132,847,153.05 × 78,487,072.70 - Step 4: Simplify right side
88,564,768.70x = 10,426,784,159,423,376 - Step 5: Solve for x
x = 10,426,784,159,423,376/88,564,768.70 - Step 6: Final answer
x = 117,730,609.05
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Double scale
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Similar ratio
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1.5x scale
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.