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Finding the Fourth Proportional to 99.46, 148.17 and 93.25

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Solution

The fourth proportional to 99.46, 148.17 and 93.25 is: 138.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    99.46 : 148.17 = 93.25 : x
  2. Step 2: Convert to fraction form
    99.46/148.17 = 93.25/x
  3. Step 3: Cross multiply
    99.46x = 148.17 × 93.25
  4. Step 4: Simplify right side
    99.46x = 13,816.85
  5. Step 5: Solve for x
    x = 13,816.85/99.46
  6. Step 6: Final answer
    x = 138.92

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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.