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Finding the Third Proportional to 80,912 and 126,660

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Solution

The third proportional to 80,912 and 126,660 is: 198,274.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,912 : 126,660 = 126,660 : x
  2. Step 2: Convert to fraction form
    80,912/126,660 = 126,660/x
  3. Step 3: Cross multiply
    80,912x = 126,660 × 126,660
  4. Step 4: Simplify right side
    80,912x = 16,042,755,600
  5. Step 5: Solve for x
    x = 16,042,755,600/80,912
  6. Step 6: Final answer
    x = 198,274.12

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.