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Finding the Third Proportional to 87,990 and 119,545

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Solution

The third proportional to 87,990 and 119,545 is: 162,416.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,990 : 119,545 = 119,545 : x
  2. Step 2: Convert to fraction form
    87,990/119,545 = 119,545/x
  3. Step 3: Cross multiply
    87,990x = 119,545 × 119,545
  4. Step 4: Simplify right side
    87,990x = 14,291,007,025
  5. Step 5: Solve for x
    x = 14,291,007,025/87,990
  6. Step 6: Final answer
    x = 162,416.26

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.