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Finding the Third Proportional to 87,168 and 134,976

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Solution

The third proportional to 87,168 and 134,976 is: 209,004.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,168 : 134,976 = 134,976 : x
  2. Step 2: Convert to fraction form
    87,168/134,976 = 134,976/x
  3. Step 3: Cross multiply
    87,168x = 134,976 × 134,976
  4. Step 4: Simplify right side
    87,168x = 18,218,520,576
  5. Step 5: Solve for x
    x = 18,218,520,576/87,168
  6. Step 6: Final answer
    x = 209,004.69

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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.