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Finding the Third Proportional to 121.25 and 134

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Solution

The third proportional to 121.25 and 134 is: 148.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    121.25 : 134 = 134 : x
  2. Step 2: Convert to fraction form
    121.25/134 = 134/x
  3. Step 3: Cross multiply
    121.25x = 134 × 134
  4. Step 4: Simplify right side
    121.25x = 17,956
  5. Step 5: Solve for x
    x = 17,956/121.25
  6. Step 6: Final answer
    x = 148.09

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Why These Related Problems?

These problems maintain the same ratio (1.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.