Home / 143,503.25-215,114.33-53,480.05

Finding the Fourth Proportional to 143,503.25, 215,114.33 and 53,480.05

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Solution

The fourth proportional to 143,503.25, 215,114.33 and 53,480.05 is: 80,167.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,503.25 : 215,114.33 = 53,480.05 : x
  2. Step 2: Convert to fraction form
    143,503.25/215,114.33 = 53,480.05/x
  3. Step 3: Cross multiply
    143,503.25x = 215,114.33 × 53,480.05
  4. Step 4: Simplify right side
    143,503.25x = 11,504,324,720.03
  5. Step 5: Solve for x
    x = 11,504,324,720.03/143,503.25
  6. Step 6: Final answer
    x = 80,167.70

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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.