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Finding the Fourth Proportional to 139.10, 192.84 and 132.08

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Solution

The fourth proportional to 139.10, 192.84 and 132.08 is: 183.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    139.10 : 192.84 = 132.08 : x
  2. Step 2: Convert to fraction form
    139.10/192.84 = 132.08/x
  3. Step 3: Cross multiply
    139.10x = 192.84 × 132.08
  4. Step 4: Simplify right side
    139.10x = 25,470.31
  5. Step 5: Solve for x
    x = 25,470.31/139.10
  6. Step 6: Final answer
    x = 183.11

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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.