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Finding the Fourth Proportional to 98.67, 136.13 and 59.88

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Solution

The fourth proportional to 98.67, 136.13 and 59.88 is: 82.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    98.67 : 136.13 = 59.88 : x
  2. Step 2: Convert to fraction form
    98.67/136.13 = 59.88/x
  3. Step 3: Cross multiply
    98.67x = 136.13 × 59.88
  4. Step 4: Simplify right side
    98.67x = 8,151.17
  5. Step 5: Solve for x
    x = 8,151.17/98.67
  6. Step 6: Final answer
    x = 82.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.