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Finding the Fourth Proportional to 96.67, 144.30 and 83.92

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Solution

The fourth proportional to 96.67, 144.30 and 83.92 is: 125.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.67 : 144.30 = 83.92 : x
  2. Step 2: Convert to fraction form
    96.67/144.30 = 83.92/x
  3. Step 3: Cross multiply
    96.67x = 144.30 × 83.92
  4. Step 4: Simplify right side
    96.67x = 12,109.66
  5. Step 5: Solve for x
    x = 12,109.66/96.67
  6. Step 6: Final answer
    x = 125.27

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.