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Finding the Fourth Proportional to 94.66, 141.32 and 81.14

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Solution

The fourth proportional to 94.66, 141.32 and 81.14 is: 121.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.66 : 141.32 = 81.14 : x
  2. Step 2: Convert to fraction form
    94.66/141.32 = 81.14/x
  3. Step 3: Cross multiply
    94.66x = 141.32 × 81.14
  4. Step 4: Simplify right side
    94.66x = 11,466.70
  5. Step 5: Solve for x
    x = 11,466.70/94.66
  6. Step 6: Final answer
    x = 121.14

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.