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Finding the Fourth Proportional to 96.05, 144.14 and 74.43

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Solution

The fourth proportional to 96.05, 144.14 and 74.43 is: 111.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.05 : 144.14 = 74.43 : x
  2. Step 2: Convert to fraction form
    96.05/144.14 = 74.43/x
  3. Step 3: Cross multiply
    96.05x = 144.14 × 74.43
  4. Step 4: Simplify right side
    96.05x = 10,728.34
  5. Step 5: Solve for x
    x = 10,728.34/96.05
  6. Step 6: Final answer
    x = 111.70

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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.