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Finding the Fourth Proportional to 101.73, 151.86 and 94.21

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Solution

The fourth proportional to 101.73, 151.86 and 94.21 is: 140.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    101.73 : 151.86 = 94.21 : x
  2. Step 2: Convert to fraction form
    101.73/151.86 = 94.21/x
  3. Step 3: Cross multiply
    101.73x = 151.86 × 94.21
  4. Step 4: Simplify right side
    101.73x = 14,306.26
  5. Step 5: Solve for x
    x = 14,306.26/101.73
  6. Step 6: Final answer
    x = 140.63

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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.