Home / 143,943.90-215,834.85-55,200.30

Finding the Fourth Proportional to 143,943.90, 215,834.85 and 55,200.30

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Solution

The fourth proportional to 143,943.90, 215,834.85 and 55,200.30 is: 82,769.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,943.90 : 215,834.85 = 55,200.30 : x
  2. Step 2: Convert to fraction form
    143,943.90/215,834.85 = 55,200.30/x
  3. Step 3: Cross multiply
    143,943.90x = 215,834.85 × 55,200.30
  4. Step 4: Simplify right side
    143,943.90x = 11,914,148,470.46
  5. Step 5: Solve for x
    x = 11,914,148,470.46/143,943.90
  6. Step 6: Final answer
    x = 82,769.39

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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.