Home / 143,945.20-215,945.48-55,191.78

Finding the Fourth Proportional to 143,945.20, 215,945.48 and 55,191.78

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Solution

The fourth proportional to 143,945.20, 215,945.48 and 55,191.78 is: 82,798.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,945.20 : 215,945.48 = 55,191.78 : x
  2. Step 2: Convert to fraction form
    143,945.20/215,945.48 = 55,191.78/x
  3. Step 3: Cross multiply
    143,945.20x = 215,945.48 × 55,191.78
  4. Step 4: Simplify right side
    143,945.20x = 11,918,415,424.15
  5. Step 5: Solve for x
    x = 11,918,415,424.15/143,945.20
  6. Step 6: Final answer
    x = 82,798.28

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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.