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Finding the Fourth Proportional to 94.26, 129.96 and 89.13

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Solution

The fourth proportional to 94.26, 129.96 and 89.13 is: 122.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.26 : 129.96 = 89.13 : x
  2. Step 2: Convert to fraction form
    94.26/129.96 = 89.13/x
  3. Step 3: Cross multiply
    94.26x = 129.96 × 89.13
  4. Step 4: Simplify right side
    94.26x = 11,583.33
  5. Step 5: Solve for x
    x = 11,583.33/94.26
  6. Step 6: Final answer
    x = 122.89

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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.