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Finding the Fourth Proportional to 139.55, 191.19 and 134.36

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Solution

The fourth proportional to 139.55, 191.19 and 134.36 is: 184.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    139.55 : 191.19 = 134.36 : x
  2. Step 2: Convert to fraction form
    139.55/191.19 = 134.36/x
  3. Step 3: Cross multiply
    139.55x = 191.19 × 134.36
  4. Step 4: Simplify right side
    139.55x = 25,688.29
  5. Step 5: Solve for x
    x = 25,688.29/139.55
  6. Step 6: Final answer
    x = 184.08

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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.