Home / 193,205.20-289,793.40-80,856.40

Finding the Fourth Proportional to 193,205.20, 289,793.40 and 80,856.40

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Solution

The fourth proportional to 193,205.20, 289,793.40 and 80,856.40 is: 121,278.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,205.20 : 289,793.40 = 80,856.40 : x
  2. Step 2: Convert to fraction form
    193,205.20/289,793.40 = 80,856.40/x
  3. Step 3: Cross multiply
    193,205.20x = 289,793.40 × 80,856.40
  4. Step 4: Simplify right side
    193,205.20x = 23,431,651,067.76
  5. Step 5: Solve for x
    x = 23,431,651,067.76/193,205.20
  6. Step 6: Final answer
    x = 121,278.57

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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.