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Finding the Third Proportional to 87,330 and 130,860

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Solution

The third proportional to 87,330 and 130,860 is: 196,087.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,330 : 130,860 = 130,860 : x
  2. Step 2: Convert to fraction form
    87,330/130,860 = 130,860/x
  3. Step 3: Cross multiply
    87,330x = 130,860 × 130,860
  4. Step 4: Simplify right side
    87,330x = 17,124,339,600
  5. Step 5: Solve for x
    x = 17,124,339,600/87,330
  6. Step 6: Final answer
    x = 196,087.71

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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.