Home / 192,180.77-288,021.12-78,195.75

Finding the Fourth Proportional to 192,180.77, 288,021.12 and 78,195.75

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Solution

The fourth proportional to 192,180.77, 288,021.12 and 78,195.75 is: 117,191.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,180.77 : 288,021.12 = 78,195.75 : x
  2. Step 2: Convert to fraction form
    192,180.77/288,021.12 = 78,195.75/x
  3. Step 3: Cross multiply
    192,180.77x = 288,021.12 × 78,195.75
  4. Step 4: Simplify right side
    192,180.77x = 22,522,025,858.65
  5. Step 5: Solve for x
    x = 22,522,025,858.65/192,180.77
  6. Step 6: Final answer
    x = 117,191.88

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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.