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Finding the Third Proportional to 87,987 and 125,365

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Solution

The third proportional to 87,987 and 125,365 is: 178,621.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,987 : 125,365 = 125,365 : x
  2. Step 2: Convert to fraction form
    87,987/125,365 = 125,365/x
  3. Step 3: Cross multiply
    87,987x = 125,365 × 125,365
  4. Step 4: Simplify right side
    87,987x = 15,716,383,225
  5. Step 5: Solve for x
    x = 15,716,383,225/87,987
  6. Step 6: Final answer
    x = 178,621.65

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.