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Finding the Third Proportional to 87,432 and 130,724

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Solution

The third proportional to 87,432 and 130,724 is: 195,452.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,432 : 130,724 = 130,724 : x
  2. Step 2: Convert to fraction form
    87,432/130,724 = 130,724/x
  3. Step 3: Cross multiply
    87,432x = 130,724 × 130,724
  4. Step 4: Simplify right side
    87,432x = 17,088,764,176
  5. Step 5: Solve for x
    x = 17,088,764,176/87,432
  6. Step 6: Final answer
    x = 195,452.06

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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.