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Finding the Fourth Proportional to 119.62, 179.62 and 111.88

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Solution

The fourth proportional to 119.62, 179.62 and 111.88 is: 168.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    119.62 : 179.62 = 111.88 : x
  2. Step 2: Convert to fraction form
    119.62/179.62 = 111.88/x
  3. Step 3: Cross multiply
    119.62x = 179.62 × 111.88
  4. Step 4: Simplify right side
    119.62x = 20,095.89
  5. Step 5: Solve for x
    x = 20,095.89/119.62
  6. Step 6: Final answer
    x = 168.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.