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Finding the Fourth Proportional to 139.11, 191.47 and 97.59

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Solution

The fourth proportional to 139.11, 191.47 and 97.59 is: 134.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    139.11 : 191.47 = 97.59 : x
  2. Step 2: Convert to fraction form
    139.11/191.47 = 97.59/x
  3. Step 3: Cross multiply
    139.11x = 191.47 × 97.59
  4. Step 4: Simplify right side
    139.11x = 18,685.33
  5. Step 5: Solve for x
    x = 18,685.33/139.11
  6. Step 6: Final answer
    x = 134.32

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.