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Finding the Fourth Proportional to 120.30, 179.52 and 116.36

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Solution

The fourth proportional to 120.30, 179.52 and 116.36 is: 173.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    120.30 : 179.52 = 116.36 : x
  2. Step 2: Convert to fraction form
    120.30/179.52 = 116.36/x
  3. Step 3: Cross multiply
    120.30x = 179.52 × 116.36
  4. Step 4: Simplify right side
    120.30x = 20,888.05
  5. Step 5: Solve for x
    x = 20,888.05/120.30
  6. Step 6: Final answer
    x = 173.63

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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.