Home / 143,834.70-215,489.60-80,324.22

Finding the Fourth Proportional to 143,834.70, 215,489.60 and 80,324.22

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Solution

The fourth proportional to 143,834.70, 215,489.60 and 80,324.22 is: 120,339.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,834.70 : 215,489.60 = 80,324.22 : x
  2. Step 2: Convert to fraction form
    143,834.70/215,489.60 = 80,324.22/x
  3. Step 3: Cross multiply
    143,834.70x = 215,489.60 × 80,324.22
  4. Step 4: Simplify right side
    143,834.70x = 17,309,034,038.11
  5. Step 5: Solve for x
    x = 17,309,034,038.11/143,834.70
  6. Step 6: Final answer
    x = 120,339.77

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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.