Finding the Fourth Proportional to 138,427,062.30, 207,640,593.45 and 115,920,207.90
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Solution
The fourth proportional to 138,427,062.30, 207,640,593.45 and 115,920,207.90 is: 173,880,311.85
Step by Step Solution
- Step 1: Write the proportion equation
138,427,062.30 : 207,640,593.45 = 115,920,207.90 : x - Step 2: Convert to fraction form
138,427,062.30/207,640,593.45 = 115,920,207.90/x - Step 3: Cross multiply
138,427,062.30x = 207,640,593.45 × 115,920,207.90 - Step 4: Simplify right side
138,427,062.30x = 24,069,740,761,203,380 - Step 5: Solve for x
x = 24,069,740,761,203,380/138,427,062.30 - Step 6: Final answer
x = 173,880,311.85
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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.