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Finding the Third Proportional to 79.81 and 125.06

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Solution

The third proportional to 79.81 and 125.06 is: 195.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    79.81 : 125.06 = 125.06 : x
  2. Step 2: Convert to fraction form
    79.81/125.06 = 125.06/x
  3. Step 3: Cross multiply
    79.81x = 125.06 × 125.06
  4. Step 4: Simplify right side
    79.81x = 15,640.63
  5. Step 5: Solve for x
    x = 15,640.63/79.81
  6. Step 6: Final answer
    x = 195.97

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.