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Finding the Fourth Proportional to 134.79, 185.25 and 119.15

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Solution

The fourth proportional to 134.79, 185.25 and 119.15 is: 163.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.79 : 185.25 = 119.15 : x
  2. Step 2: Convert to fraction form
    134.79/185.25 = 119.15/x
  3. Step 3: Cross multiply
    134.79x = 185.25 × 119.15
  4. Step 4: Simplify right side
    134.79x = 22,072.54
  5. Step 5: Solve for x
    x = 22,072.54/134.79
  6. Step 6: Final answer
    x = 163.76

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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.