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Finding the Fourth Proportional to 119.13, 179.54 and 112.51

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Solution

The fourth proportional to 119.13, 179.54 and 112.51 is: 169.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    119.13 : 179.54 = 112.51 : x
  2. Step 2: Convert to fraction form
    119.13/179.54 = 112.51/x
  3. Step 3: Cross multiply
    119.13x = 179.54 × 112.51
  4. Step 4: Simplify right side
    119.13x = 20,200.05
  5. Step 5: Solve for x
    x = 20,200.05/119.13
  6. Step 6: Final answer
    x = 169.56

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.