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Finding the Third Proportional to 102,728 and 157,680

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Solution

The third proportional to 102,728 and 157,680 is: 242,027.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,728 : 157,680 = 157,680 : x
  2. Step 2: Convert to fraction form
    102,728/157,680 = 157,680/x
  3. Step 3: Cross multiply
    102,728x = 157,680 × 157,680
  4. Step 4: Simplify right side
    102,728x = 24,862,982,400
  5. Step 5: Solve for x
    x = 24,862,982,400/102,728
  6. Step 6: Final answer
    x = 242,027.32

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.