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Finding the Fourth Proportional to 123.95, 171.11 and 96.46

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Solution

The fourth proportional to 123.95, 171.11 and 96.46 is: 133.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    123.95 : 171.11 = 96.46 : x
  2. Step 2: Convert to fraction form
    123.95/171.11 = 96.46/x
  3. Step 3: Cross multiply
    123.95x = 171.11 × 96.46
  4. Step 4: Simplify right side
    123.95x = 16,505.08
  5. Step 5: Solve for x
    x = 16,505.08/123.95
  6. Step 6: Final answer
    x = 133.16

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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.