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Finding the Fourth Proportional to 141.02, 195.96 and 139.54

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Solution

The fourth proportional to 141.02, 195.96 and 139.54 is: 193.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.02 : 195.96 = 139.54 : x
  2. Step 2: Convert to fraction form
    141.02/195.96 = 139.54/x
  3. Step 3: Cross multiply
    141.02x = 195.96 × 139.54
  4. Step 4: Simplify right side
    141.02x = 27,342.58
  5. Step 5: Solve for x
    x = 27,342.58/141.02
  6. Step 6: Final answer
    x = 193.89

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.