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Finding the Fourth Proportional to 94.81, 141.06 and 92.68

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Solution

The fourth proportional to 94.81, 141.06 and 92.68 is: 137.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.81 : 141.06 = 92.68 : x
  2. Step 2: Convert to fraction form
    94.81/141.06 = 92.68/x
  3. Step 3: Cross multiply
    94.81x = 141.06 × 92.68
  4. Step 4: Simplify right side
    94.81x = 13,073.44
  5. Step 5: Solve for x
    x = 13,073.44/94.81
  6. Step 6: Final answer
    x = 137.89

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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.