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Finding the Fourth Proportional to 141.06, 194.62 and 91.27

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Solution

The fourth proportional to 141.06, 194.62 and 91.27 is: 125.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.06 : 194.62 = 91.27 : x
  2. Step 2: Convert to fraction form
    141.06/194.62 = 91.27/x
  3. Step 3: Cross multiply
    141.06x = 194.62 × 91.27
  4. Step 4: Simplify right side
    141.06x = 17,762.97
  5. Step 5: Solve for x
    x = 17,762.97/141.06
  6. Step 6: Final answer
    x = 125.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.