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Finding the Fourth Proportional to 95.81, 142.68 and 95.54

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Solution

The fourth proportional to 95.81, 142.68 and 95.54 is: 142.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    95.81 : 142.68 = 95.54 : x
  2. Step 2: Convert to fraction form
    95.81/142.68 = 95.54/x
  3. Step 3: Cross multiply
    95.81x = 142.68 × 95.54
  4. Step 4: Simplify right side
    95.81x = 13,631.17
  5. Step 5: Solve for x
    x = 13,631.17/95.81
  6. Step 6: Final answer
    x = 142.27

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.