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Finding the Fourth Proportional to 168.73, 232.86 and 98.81

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Solution

The fourth proportional to 168.73, 232.86 and 98.81 is: 136.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.73 : 232.86 = 98.81 : x
  2. Step 2: Convert to fraction form
    168.73/232.86 = 98.81/x
  3. Step 3: Cross multiply
    168.73x = 232.86 × 98.81
  4. Step 4: Simplify right side
    168.73x = 23,008.90
  5. Step 5: Solve for x
    x = 23,008.90/168.73
  6. Step 6: Final answer
    x = 136.37

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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.