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Finding the Fourth Proportional to 95.94, 143.91 and 80.69

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Solution

The fourth proportional to 95.94, 143.91 and 80.69 is: 121.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    95.94 : 143.91 = 80.69 : x
  2. Step 2: Convert to fraction form
    95.94/143.91 = 80.69/x
  3. Step 3: Cross multiply
    95.94x = 143.91 × 80.69
  4. Step 4: Simplify right side
    95.94x = 11,611.38
  5. Step 5: Solve for x
    x = 11,611.38/95.94
  6. Step 6: Final answer
    x = 121.03

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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.