Home / 108,790.78-162,869.21-80,834.75

Finding the Fourth Proportional to 108,790.78, 162,869.21 and 80,834.75

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Solution

The fourth proportional to 108,790.78, 162,869.21 and 80,834.75 is: 121,016.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,790.78 : 162,869.21 = 80,834.75 : x
  2. Step 2: Convert to fraction form
    108,790.78/162,869.21 = 80,834.75/x
  3. Step 3: Cross multiply
    108,790.78x = 162,869.21 × 80,834.75
  4. Step 4: Simplify right side
    108,790.78x = 13,165,491,873.05
  5. Step 5: Solve for x
    x = 13,165,491,873.05/108,790.78
  6. Step 6: Final answer
    x = 121,016.61

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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.