Home / 143,640.72-215,550.90-54,901.80

Finding the Fourth Proportional to 143,640.72, 215,550.90 and 54,901.80

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Solution

The fourth proportional to 143,640.72, 215,550.90 and 54,901.80 is: 82,387.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,640.72 : 215,550.90 = 54,901.80 : x
  2. Step 2: Convert to fraction form
    143,640.72/215,550.90 = 54,901.80/x
  3. Step 3: Cross multiply
    143,640.72x = 215,550.90 × 54,901.80
  4. Step 4: Simplify right side
    143,640.72x = 11,834,132,401.62
  5. Step 5: Solve for x
    x = 11,834,132,401.62/143,640.72
  6. Step 6: Final answer
    x = 82,387.03

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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.