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Finding the Third Proportional to 66,972 and 147,336

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Solution

The third proportional to 66,972 and 147,336 is: 324,133.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,972 : 147,336 = 147,336 : x
  2. Step 2: Convert to fraction form
    66,972/147,336 = 147,336/x
  3. Step 3: Cross multiply
    66,972x = 147,336 × 147,336
  4. Step 4: Simplify right side
    66,972x = 21,707,896,896
  5. Step 5: Solve for x
    x = 21,707,896,896/66,972
  6. Step 6: Final answer
    x = 324,133.92

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.