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Finding the Third Proportional to 103.13 and 136.31

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Solution

The third proportional to 103.13 and 136.31 is: 180.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    103.13 : 136.31 = 136.31 : x
  2. Step 2: Convert to fraction form
    103.13/136.31 = 136.31/x
  3. Step 3: Cross multiply
    103.13x = 136.31 × 136.31
  4. Step 4: Simplify right side
    103.13x = 18,581.10
  5. Step 5: Solve for x
    x = 18,581.10/103.13
  6. Step 6: Final answer
    x = 180.18

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.