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Finding the Fourth Proportional to 129.03, 194.60 and 124.92

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Solution

The fourth proportional to 129.03, 194.60 and 124.92 is: 188.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129.03 : 194.60 = 124.92 : x
  2. Step 2: Convert to fraction form
    129.03/194.60 = 124.92/x
  3. Step 3: Cross multiply
    129.03x = 194.60 × 124.92
  4. Step 4: Simplify right side
    129.03x = 24,309.43
  5. Step 5: Solve for x
    x = 24,309.43/129.03
  6. Step 6: Final answer
    x = 188.40

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.