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Finding the Fourth Proportional to 94.89, 141.64 and 88.57

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Solution

The fourth proportional to 94.89, 141.64 and 88.57 is: 132.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.89 : 141.64 = 88.57 : x
  2. Step 2: Convert to fraction form
    94.89/141.64 = 88.57/x
  3. Step 3: Cross multiply
    94.89x = 141.64 × 88.57
  4. Step 4: Simplify right side
    94.89x = 12,545.05
  5. Step 5: Solve for x
    x = 12,545.05/94.89
  6. Step 6: Final answer
    x = 132.21

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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.