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Finding the Third Proportional to 87,461.25 and 138,273

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Solution

The third proportional to 87,461.25 and 138,273 is: 218,604.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,461.25 : 138,273 = 138,273 : x
  2. Step 2: Convert to fraction form
    87,461.25/138,273 = 138,273/x
  3. Step 3: Cross multiply
    87,461.25x = 138,273 × 138,273
  4. Step 4: Simplify right side
    87,461.25x = 19,119,422,529
  5. Step 5: Solve for x
    x = 19,119,422,529/87,461.25
  6. Step 6: Final answer
    x = 218,604.50

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.