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Finding the Third Proportional to 84,640.50 and 131,481

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Solution

The third proportional to 84,640.50 and 131,481 is: 204,243.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,640.50 : 131,481 = 131,481 : x
  2. Step 2: Convert to fraction form
    84,640.50/131,481 = 131,481/x
  3. Step 3: Cross multiply
    84,640.50x = 131,481 × 131,481
  4. Step 4: Simplify right side
    84,640.50x = 17,287,253,361
  5. Step 5: Solve for x
    x = 17,287,253,361/84,640.50
  6. Step 6: Final answer
    x = 204,243.28

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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.