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Finding the Third Proportional to 68,940 and 149,544

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Solution

The third proportional to 68,940 and 149,544 is: 324,389.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,940 : 149,544 = 149,544 : x
  2. Step 2: Convert to fraction form
    68,940/149,544 = 149,544/x
  3. Step 3: Cross multiply
    68,940x = 149,544 × 149,544
  4. Step 4: Simplify right side
    68,940x = 22,363,407,936
  5. Step 5: Solve for x
    x = 22,363,407,936/68,940
  6. Step 6: Final answer
    x = 324,389.44

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.