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Finding the Third Proportional to 84,558 and 126,561

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Solution

The third proportional to 84,558 and 126,561 is: 189,428.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,558 : 126,561 = 126,561 : x
  2. Step 2: Convert to fraction form
    84,558/126,561 = 126,561/x
  3. Step 3: Cross multiply
    84,558x = 126,561 × 126,561
  4. Step 4: Simplify right side
    84,558x = 16,017,686,721
  5. Step 5: Solve for x
    x = 16,017,686,721/84,558
  6. Step 6: Final answer
    x = 189,428.40

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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.