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Finding the Third Proportional to 87,612.75 and 135,945

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Solution

The third proportional to 87,612.75 and 135,945 is: 210,940.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,612.75 : 135,945 = 135,945 : x
  2. Step 2: Convert to fraction form
    87,612.75/135,945 = 135,945/x
  3. Step 3: Cross multiply
    87,612.75x = 135,945 × 135,945
  4. Step 4: Simplify right side
    87,612.75x = 18,481,043,025
  5. Step 5: Solve for x
    x = 18,481,043,025/87,612.75
  6. Step 6: Final answer
    x = 210,940.11

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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.