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Finding the Third Proportional to 66,982.50 and 144,481

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Solution

The third proportional to 66,982.50 and 144,481 is: 311,644.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,982.50 : 144,481 = 144,481 : x
  2. Step 2: Convert to fraction form
    66,982.50/144,481 = 144,481/x
  3. Step 3: Cross multiply
    66,982.50x = 144,481 × 144,481
  4. Step 4: Simplify right side
    66,982.50x = 20,874,759,361
  5. Step 5: Solve for x
    x = 20,874,759,361/66,982.50
  6. Step 6: Final answer
    x = 311,644.97

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.