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Finding the Fourth Proportional to 192,874.59, 289,358.07 and 80,492.31

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Solution

The fourth proportional to 192,874.59, 289,358.07 and 80,492.31 is: 120,757.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,874.59 : 289,358.07 = 80,492.31 : x
  2. Step 2: Convert to fraction form
    192,874.59/289,358.07 = 80,492.31/x
  3. Step 3: Cross multiply
    192,874.59x = 289,358.07 × 80,492.31
  4. Step 4: Simplify right side
    192,874.59x = 23,291,099,471.44
  5. Step 5: Solve for x
    x = 23,291,099,471.44/192,874.59
  6. Step 6: Final answer
    x = 120,757.74

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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.