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Finding the Fourth Proportional to 120.49, 179.50 and 114.69

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Solution

The fourth proportional to 120.49, 179.50 and 114.69 is: 170.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    120.49 : 179.50 = 114.69 : x
  2. Step 2: Convert to fraction form
    120.49/179.50 = 114.69/x
  3. Step 3: Cross multiply
    120.49x = 179.50 × 114.69
  4. Step 4: Simplify right side
    120.49x = 20,585.96
  5. Step 5: Solve for x
    x = 20,585.96/120.49
  6. Step 6: Final answer
    x = 170.85

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.