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Finding the Third Proportional to 139.25 and 193

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Solution

The third proportional to 139.25 and 193 is: 267.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    139.25 : 193 = 193 : x
  2. Step 2: Convert to fraction form
    139.25/193 = 193/x
  3. Step 3: Cross multiply
    139.25x = 193 × 193
  4. Step 4: Simplify right side
    139.25x = 37,249
  5. Step 5: Solve for x
    x = 37,249/139.25
  6. Step 6: Final answer
    x = 267.50

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.