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Finding the Fourth Proportional to 129.03, 192.55 and 125.95

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Solution

The fourth proportional to 129.03, 192.55 and 125.95 is: 187.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    129.03 : 192.55 = 125.95 : x
  2. Step 2: Convert to fraction form
    129.03/192.55 = 125.95/x
  3. Step 3: Cross multiply
    129.03x = 192.55 × 125.95
  4. Step 4: Simplify right side
    129.03x = 24,250.75
  5. Step 5: Solve for x
    x = 24,250.75/129.03
  6. Step 6: Final answer
    x = 187.94

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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.