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Finding the Third Proportional to 86,559 and 129,493

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Solution

The third proportional to 86,559 and 129,493 is: 193,722.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,559 : 129,493 = 129,493 : x
  2. Step 2: Convert to fraction form
    86,559/129,493 = 129,493/x
  3. Step 3: Cross multiply
    86,559x = 129,493 × 129,493
  4. Step 4: Simplify right side
    86,559x = 16,768,437,049
  5. Step 5: Solve for x
    x = 16,768,437,049/86,559
  6. Step 6: Final answer
    x = 193,722.63

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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.