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Finding the Third Proportional to 86.06 and 136.41

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Solution

The third proportional to 86.06 and 136.41 is: 216.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86.06 : 136.41 = 136.41 : x
  2. Step 2: Convert to fraction form
    86.06/136.41 = 136.41/x
  3. Step 3: Cross multiply
    86.06x = 136.41 × 136.41
  4. Step 4: Simplify right side
    86.06x = 18,606.67
  5. Step 5: Solve for x
    x = 18,606.67/86.06
  6. Step 6: Final answer
    x = 216.20

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.