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Finding the Third Proportional to 71,616 and 155,976

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Solution

The third proportional to 71,616 and 155,976 is: 339,707.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,616 : 155,976 = 155,976 : x
  2. Step 2: Convert to fraction form
    71,616/155,976 = 155,976/x
  3. Step 3: Cross multiply
    71,616x = 155,976 × 155,976
  4. Step 4: Simplify right side
    71,616x = 24,328,512,576
  5. Step 5: Solve for x
    x = 24,328,512,576/71,616
  6. Step 6: Final answer
    x = 339,707.78

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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.