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Finding the Fourth Proportional to 130.86, 195.33 and 125.70

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Solution

The fourth proportional to 130.86, 195.33 and 125.70 is: 187.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    130.86 : 195.33 = 125.70 : x
  2. Step 2: Convert to fraction form
    130.86/195.33 = 125.70/x
  3. Step 3: Cross multiply
    130.86x = 195.33 × 125.70
  4. Step 4: Simplify right side
    130.86x = 24,552.98
  5. Step 5: Solve for x
    x = 24,552.98/130.86
  6. Step 6: Final answer
    x = 187.63

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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.