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Finding the Fourth Proportional to 192,862.87, 289,340.48 and 80,480.56

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Solution

The fourth proportional to 192,862.87, 289,340.48 and 80,480.56 is: 120,740.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,862.87 : 289,340.48 = 80,480.56 : x
  2. Step 2: Convert to fraction form
    192,862.87/289,340.48 = 80,480.56/x
  3. Step 3: Cross multiply
    192,862.87x = 289,340.48 × 80,480.56
  4. Step 4: Simplify right side
    192,862.87x = 23,286,284,468.85
  5. Step 5: Solve for x
    x = 23,286,284,468.85/192,862.87
  6. Step 6: Final answer
    x = 120,740.11

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1.5x scale

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.