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Finding the Fourth Proportional to 94.44, 140.87 and 84.18

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Solution

The fourth proportional to 94.44, 140.87 and 84.18 is: 125.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.44 : 140.87 = 84.18 : x
  2. Step 2: Convert to fraction form
    94.44/140.87 = 84.18/x
  3. Step 3: Cross multiply
    94.44x = 140.87 × 84.18
  4. Step 4: Simplify right side
    94.44x = 11,858.02
  5. Step 5: Solve for x
    x = 11,858.02/94.44
  6. Step 6: Final answer
    x = 125.56

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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.