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Finding the Fourth Proportional to 139.70, 192.84 and 95.96

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Solution

The fourth proportional to 139.70, 192.84 and 95.96 is: 132.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    139.70 : 192.84 = 95.96 : x
  2. Step 2: Convert to fraction form
    139.70/192.84 = 95.96/x
  3. Step 3: Cross multiply
    139.70x = 192.84 × 95.96
  4. Step 4: Simplify right side
    139.70x = 18,504.93
  5. Step 5: Solve for x
    x = 18,504.93/139.70
  6. Step 6: Final answer
    x = 132.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.