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Finding the Fourth Proportional to 131,976.88, 197,958.84 and 43,218.68

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Solution

The fourth proportional to 131,976.88, 197,958.84 and 43,218.68 is: 64,825.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,976.88 : 197,958.84 = 43,218.68 : x
  2. Step 2: Convert to fraction form
    131,976.88/197,958.84 = 43,218.68/x
  3. Step 3: Cross multiply
    131,976.88x = 197,958.84 × 43,218.68
  4. Step 4: Simplify right side
    131,976.88x = 8,555,519,759.13
  5. Step 5: Solve for x
    x = 8,555,519,759.13/131,976.88
  6. Step 6: Final answer
    x = 64,825.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.