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Finding the Third Proportional to 87,816 and 136,176

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Solution

The third proportional to 87,816 and 136,176 is: 211,167.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,816 : 136,176 = 136,176 : x
  2. Step 2: Convert to fraction form
    87,816/136,176 = 136,176/x
  3. Step 3: Cross multiply
    87,816x = 136,176 × 136,176
  4. Step 4: Simplify right side
    87,816x = 18,543,902,976
  5. Step 5: Solve for x
    x = 18,543,902,976/87,816
  6. Step 6: Final answer
    x = 211,167.70

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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.