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Finding the Fourth Proportional to 139.48, 191.27 and 134.56

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Solution

The fourth proportional to 139.48, 191.27 and 134.56 is: 184.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    139.48 : 191.27 = 134.56 : x
  2. Step 2: Convert to fraction form
    139.48/191.27 = 134.56/x
  3. Step 3: Cross multiply
    139.48x = 191.27 × 134.56
  4. Step 4: Simplify right side
    139.48x = 25,737.29
  5. Step 5: Solve for x
    x = 25,737.29/139.48
  6. Step 6: Final answer
    x = 184.52

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.