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Finding the Third Proportional to 66,485 and 144,874

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Solution

The third proportional to 66,485 and 144,874 is: 315,687.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,485 : 144,874 = 144,874 : x
  2. Step 2: Convert to fraction form
    66,485/144,874 = 144,874/x
  3. Step 3: Cross multiply
    66,485x = 144,874 × 144,874
  4. Step 4: Simplify right side
    66,485x = 20,988,475,876
  5. Step 5: Solve for x
    x = 20,988,475,876/66,485
  6. Step 6: Final answer
    x = 315,687.39

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.