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Finding the Third Proportional to 60,554 and 128,320

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Solution

The third proportional to 60,554 and 128,320 is: 271,922.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,554 : 128,320 = 128,320 : x
  2. Step 2: Convert to fraction form
    60,554/128,320 = 128,320/x
  3. Step 3: Cross multiply
    60,554x = 128,320 × 128,320
  4. Step 4: Simplify right side
    60,554x = 16,466,022,400
  5. Step 5: Solve for x
    x = 16,466,022,400/60,554
  6. Step 6: Final answer
    x = 271,922.95

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.