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Finding the Fourth Proportional to 96.07, 143.33 and 81.73

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Solution

The fourth proportional to 96.07, 143.33 and 81.73 is: 121.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.07 : 143.33 = 81.73 : x
  2. Step 2: Convert to fraction form
    96.07/143.33 = 81.73/x
  3. Step 3: Cross multiply
    96.07x = 143.33 × 81.73
  4. Step 4: Simplify right side
    96.07x = 11,714.36
  5. Step 5: Solve for x
    x = 11,714.36/96.07
  6. Step 6: Final answer
    x = 121.94

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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.