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Finding the Fourth Proportional to 96.06, 143.90 and 74.38

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Solution

The fourth proportional to 96.06, 143.90 and 74.38 is: 111.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.06 : 143.90 = 74.38 : x
  2. Step 2: Convert to fraction form
    96.06/143.90 = 74.38/x
  3. Step 3: Cross multiply
    96.06x = 143.90 × 74.38
  4. Step 4: Simplify right side
    96.06x = 10,702.83
  5. Step 5: Solve for x
    x = 10,702.83/96.06
  6. Step 6: Final answer
    x = 111.42

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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.