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Finding the Third Proportional to 87,470 and 131,180

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Solution

The third proportional to 87,470 and 131,180 is: 196,732.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,470 : 131,180 = 131,180 : x
  2. Step 2: Convert to fraction form
    87,470/131,180 = 131,180/x
  3. Step 3: Cross multiply
    87,470x = 131,180 × 131,180
  4. Step 4: Simplify right side
    87,470x = 17,208,192,400
  5. Step 5: Solve for x
    x = 17,208,192,400/87,470
  6. Step 6: Final answer
    x = 196,732.51

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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.