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Finding the Third Proportional to 66,981 and 148,650

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Solution

The third proportional to 66,981 and 148,650 is: 329,896.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,981 : 148,650 = 148,650 : x
  2. Step 2: Convert to fraction form
    66,981/148,650 = 148,650/x
  3. Step 3: Cross multiply
    66,981x = 148,650 × 148,650
  4. Step 4: Simplify right side
    66,981x = 22,096,822,500
  5. Step 5: Solve for x
    x = 22,096,822,500/66,981
  6. Step 6: Final answer
    x = 329,896.87

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.