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Finding the Fourth Proportional to 141.08, 210.49 and 136.76

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Solution

The fourth proportional to 141.08, 210.49 and 136.76 is: 204.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.08 : 210.49 = 136.76 : x
  2. Step 2: Convert to fraction form
    141.08/210.49 = 136.76/x
  3. Step 3: Cross multiply
    141.08x = 210.49 × 136.76
  4. Step 4: Simplify right side
    141.08x = 28,786.61
  5. Step 5: Solve for x
    x = 28,786.61/141.08
  6. Step 6: Final answer
    x = 204.04

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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.