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Finding the Fourth Proportional to 120.14, 179.40 and 98.52

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Solution

The fourth proportional to 120.14, 179.40 and 98.52 is: 147.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    120.14 : 179.40 = 98.52 : x
  2. Step 2: Convert to fraction form
    120.14/179.40 = 98.52/x
  3. Step 3: Cross multiply
    120.14x = 179.40 × 98.52
  4. Step 4: Simplify right side
    120.14x = 17,673.34
  5. Step 5: Solve for x
    x = 17,673.34/120.14
  6. Step 6: Final answer
    x = 147.11

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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.