Home / 156,439.38-215,885.31-84,819.18

Finding the Fourth Proportional to 156,439.38, 215,885.31 and 84,819.18

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Solution

The fourth proportional to 156,439.38, 215,885.31 and 84,819.18 is: 117,049.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,439.38 : 215,885.31 = 84,819.18 : x
  2. Step 2: Convert to fraction form
    156,439.38/215,885.31 = 84,819.18/x
  3. Step 3: Cross multiply
    156,439.38x = 215,885.31 × 84,819.18
  4. Step 4: Simplify right side
    156,439.38x = 18,311,214,968.25
  5. Step 5: Solve for x
    x = 18,311,214,968.25/156,439.38
  6. Step 6: Final answer
    x = 117,049.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.