Home / 198,315.56-297,591.53-71,965.65

Finding the Fourth Proportional to 198,315.56, 297,591.53 and 71,965.65

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Solution

The fourth proportional to 198,315.56, 297,591.53 and 71,965.65 is: 107,991.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,315.56 : 297,591.53 = 71,965.65 : x
  2. Step 2: Convert to fraction form
    198,315.56/297,591.53 = 71,965.65/x
  3. Step 3: Cross multiply
    198,315.56x = 297,591.53 × 71,965.65
  4. Step 4: Simplify right side
    198,315.56x = 21,416,367,531.12
  5. Step 5: Solve for x
    x = 21,416,367,531.12/198,315.56
  6. Step 6: Final answer
    x = 107,991.37

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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.