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Finding the Third Proportional to 87,869 and 136,173

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Solution

The third proportional to 87,869 and 136,173 is: 211,031.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,869 : 136,173 = 136,173 : x
  2. Step 2: Convert to fraction form
    87,869/136,173 = 136,173/x
  3. Step 3: Cross multiply
    87,869x = 136,173 × 136,173
  4. Step 4: Simplify right side
    87,869x = 18,543,085,929
  5. Step 5: Solve for x
    x = 18,543,085,929/87,869
  6. Step 6: Final answer
    x = 211,031.03

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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.