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Finding the Third Proportional to 100,436 and 155,517

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Solution

The third proportional to 100,436 and 155,517 is: 240,805.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,436 : 155,517 = 155,517 : x
  2. Step 2: Convert to fraction form
    100,436/155,517 = 155,517/x
  3. Step 3: Cross multiply
    100,436x = 155,517 × 155,517
  4. Step 4: Simplify right side
    100,436x = 24,185,537,289
  5. Step 5: Solve for x
    x = 24,185,537,289/100,436
  6. Step 6: Final answer
    x = 240,805.46

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.