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Finding the Fourth Proportional to 141.99, 195.71 and 130.38

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Solution

The fourth proportional to 141.99, 195.71 and 130.38 is: 179.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.99 : 195.71 = 130.38 : x
  2. Step 2: Convert to fraction form
    141.99/195.71 = 130.38/x
  3. Step 3: Cross multiply
    141.99x = 195.71 × 130.38
  4. Step 4: Simplify right side
    141.99x = 25,516.02
  5. Step 5: Solve for x
    x = 25,516.02/141.99
  6. Step 6: Final answer
    x = 179.70

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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.