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Finding the Fourth Proportional to 139.43, 193.22 and 131.33

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Solution

The fourth proportional to 139.43, 193.22 and 131.33 is: 182.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    139.43 : 193.22 = 131.33 : x
  2. Step 2: Convert to fraction form
    139.43/193.22 = 131.33/x
  3. Step 3: Cross multiply
    139.43x = 193.22 × 131.33
  4. Step 4: Simplify right side
    139.43x = 25,375.58
  5. Step 5: Solve for x
    x = 25,375.58/139.43
  6. Step 6: Final answer
    x = 182.00

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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.