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Finding the Third Proportional to 69,374 and 149,269

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Solution

The third proportional to 69,374 and 149,269 is: 321,175.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,374 : 149,269 = 149,269 : x
  2. Step 2: Convert to fraction form
    69,374/149,269 = 149,269/x
  3. Step 3: Cross multiply
    69,374x = 149,269 × 149,269
  4. Step 4: Simplify right side
    69,374x = 22,281,234,361
  5. Step 5: Solve for x
    x = 22,281,234,361/69,374
  6. Step 6: Final answer
    x = 321,175.58

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.