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Finding the Third Proportional to 85,423 and 131,479

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Solution

The third proportional to 85,423 and 131,479 is: 202,366.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,423 : 131,479 = 131,479 : x
  2. Step 2: Convert to fraction form
    85,423/131,479 = 131,479/x
  3. Step 3: Cross multiply
    85,423x = 131,479 × 131,479
  4. Step 4: Simplify right side
    85,423x = 17,286,727,441
  5. Step 5: Solve for x
    x = 17,286,727,441/85,423
  6. Step 6: Final answer
    x = 202,366.19

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.