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Finding the Third Proportional to 83.06 and 136.78

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Solution

The third proportional to 83.06 and 136.78 is: 225.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    83.06 : 136.78 = 136.78 : x
  2. Step 2: Convert to fraction form
    83.06/136.78 = 136.78/x
  3. Step 3: Cross multiply
    83.06x = 136.78 × 136.78
  4. Step 4: Simplify right side
    83.06x = 18,709.11
  5. Step 5: Solve for x
    x = 18,709.11/83.06
  6. Step 6: Final answer
    x = 225.24

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Why These Related Problems?

These problems maintain the same ratio (1.65) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.