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Finding the Fourth Proportional to 141.89, 196.29 and 124.65

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Solution

The fourth proportional to 141.89, 196.29 and 124.65 is: 172.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.89 : 196.29 = 124.65 : x
  2. Step 2: Convert to fraction form
    141.89/196.29 = 124.65/x
  3. Step 3: Cross multiply
    141.89x = 196.29 × 124.65
  4. Step 4: Simplify right side
    141.89x = 24,467.55
  5. Step 5: Solve for x
    x = 24,467.55/141.89
  6. Step 6: Final answer
    x = 172.45

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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.