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Finding the Third Proportional to 71,369 and 168,782

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Solution

The third proportional to 71,369 and 168,782 is: 399,155.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,369 : 168,782 = 168,782 : x
  2. Step 2: Convert to fraction form
    71,369/168,782 = 168,782/x
  3. Step 3: Cross multiply
    71,369x = 168,782 × 168,782
  4. Step 4: Simplify right side
    71,369x = 28,487,363,524
  5. Step 5: Solve for x
    x = 28,487,363,524/71,369
  6. Step 6: Final answer
    x = 399,155.99

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.