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Finding the Fourth Proportional to 119.40, 179.10 and 110.20

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Solution

The fourth proportional to 119.40, 179.10 and 110.20 is: 165.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    119.40 : 179.10 = 110.20 : x
  2. Step 2: Convert to fraction form
    119.40/179.10 = 110.20/x
  3. Step 3: Cross multiply
    119.40x = 179.10 × 110.20
  4. Step 4: Simplify right side
    119.40x = 19,736.82
  5. Step 5: Solve for x
    x = 19,736.82/119.40
  6. Step 6: Final answer
    x = 165.30

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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.