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Finding the Fourth Proportional to 120.12, 179.33 and 106.48

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Solution

The fourth proportional to 120.12, 179.33 and 106.48 is: 158.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    120.12 : 179.33 = 106.48 : x
  2. Step 2: Convert to fraction form
    120.12/179.33 = 106.48/x
  3. Step 3: Cross multiply
    120.12x = 179.33 × 106.48
  4. Step 4: Simplify right side
    120.12x = 19,095.06
  5. Step 5: Solve for x
    x = 19,095.06/120.12
  6. Step 6: Final answer
    x = 158.97

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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.