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Finding the Fourth Proportional to 95.50, 143.05 and 73.81

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Solution

The fourth proportional to 95.50, 143.05 and 73.81 is: 110.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    95.50 : 143.05 = 73.81 : x
  2. Step 2: Convert to fraction form
    95.50/143.05 = 73.81/x
  3. Step 3: Cross multiply
    95.50x = 143.05 × 73.81
  4. Step 4: Simplify right side
    95.50x = 10,558.52
  5. Step 5: Solve for x
    x = 10,558.52/95.50
  6. Step 6: Final answer
    x = 110.56

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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.