Home / 192,783.20-288,753.64-80,121.84

Finding the Fourth Proportional to 192,783.20, 288,753.64 and 80,121.84

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Solution

The fourth proportional to 192,783.20, 288,753.64 and 80,121.84 is: 120,007.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,783.20 : 288,753.64 = 80,121.84 : x
  2. Step 2: Convert to fraction form
    192,783.20/288,753.64 = 80,121.84/x
  3. Step 3: Cross multiply
    192,783.20x = 288,753.64 × 80,121.84
  4. Step 4: Simplify right side
    192,783.20x = 23,135,472,943.50
  5. Step 5: Solve for x
    x = 23,135,472,943.50/192,783.20
  6. Step 6: Final answer
    x = 120,007.72

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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.