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Finding the Third Proportional to 136.13 and 154.31

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Solution

The third proportional to 136.13 and 154.31 is: 174.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.13 : 154.31 = 154.31 : x
  2. Step 2: Convert to fraction form
    136.13/154.31 = 154.31/x
  3. Step 3: Cross multiply
    136.13x = 154.31 × 154.31
  4. Step 4: Simplify right side
    136.13x = 23,812.35
  5. Step 5: Solve for x
    x = 23,812.35/136.13
  6. Step 6: Final answer
    x = 174.93

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Why These Related Problems?

These problems maintain the same ratio (1.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.