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Finding the Fourth Proportional to 121.13, 167.01 and 94.85

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Solution

The fourth proportional to 121.13, 167.01 and 94.85 is: 130.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    121.13 : 167.01 = 94.85 : x
  2. Step 2: Convert to fraction form
    121.13/167.01 = 94.85/x
  3. Step 3: Cross multiply
    121.13x = 167.01 × 94.85
  4. Step 4: Simplify right side
    121.13x = 15,841.81
  5. Step 5: Solve for x
    x = 15,841.81/121.13
  6. Step 6: Final answer
    x = 130.78

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.