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Finding the Third Proportional to 85,872 and 126,317

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Solution

The third proportional to 85,872 and 126,317 is: 185,811.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,872 : 126,317 = 126,317 : x
  2. Step 2: Convert to fraction form
    85,872/126,317 = 126,317/x
  3. Step 3: Cross multiply
    85,872x = 126,317 × 126,317
  4. Step 4: Simplify right side
    85,872x = 15,955,984,489
  5. Step 5: Solve for x
    x = 15,955,984,489/85,872
  6. Step 6: Final answer
    x = 185,811.26

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.