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Finding the Fourth Proportional to 141.65, 195.49 and 102.43

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Solution

The fourth proportional to 141.65, 195.49 and 102.43 is: 141.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.65 : 195.49 = 102.43 : x
  2. Step 2: Convert to fraction form
    141.65/195.49 = 102.43/x
  3. Step 3: Cross multiply
    141.65x = 195.49 × 102.43
  4. Step 4: Simplify right side
    141.65x = 20,024.41
  5. Step 5: Solve for x
    x = 20,024.41/141.65
  6. Step 6: Final answer
    x = 141.37

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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.