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Finding the Third Proportional to 71,122.50 and 155,367

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Solution

The third proportional to 71,122.50 and 155,367 is: 339,398.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,122.50 : 155,367 = 155,367 : x
  2. Step 2: Convert to fraction form
    71,122.50/155,367 = 155,367/x
  3. Step 3: Cross multiply
    71,122.50x = 155,367 × 155,367
  4. Step 4: Simplify right side
    71,122.50x = 24,138,904,689
  5. Step 5: Solve for x
    x = 24,138,904,689/71,122.50
  6. Step 6: Final answer
    x = 339,398.99

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.