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Finding the Fourth Proportional to 140.20, 194.35 and 131.56

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Solution

The fourth proportional to 140.20, 194.35 and 131.56 is: 182.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    140.20 : 194.35 = 131.56 : x
  2. Step 2: Convert to fraction form
    140.20/194.35 = 131.56/x
  3. Step 3: Cross multiply
    140.20x = 194.35 × 131.56
  4. Step 4: Simplify right side
    140.20x = 25,568.69
  5. Step 5: Solve for x
    x = 25,568.69/140.20
  6. Step 6: Final answer
    x = 182.37

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.