Home / 143,351.09-215,070.39-73,279.61

Finding the Fourth Proportional to 143,351.09, 215,070.39 and 73,279.61

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Solution

The fourth proportional to 143,351.09, 215,070.39 and 73,279.61 is: 109,941.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,351.09 : 215,070.39 = 73,279.61 : x
  2. Step 2: Convert to fraction form
    143,351.09/215,070.39 = 73,279.61/x
  3. Step 3: Cross multiply
    143,351.09x = 215,070.39 × 73,279.61
  4. Step 4: Simplify right side
    143,351.09x = 15,760,274,301.75
  5. Step 5: Solve for x
    x = 15,760,274,301.75/143,351.09
  6. Step 6: Final answer
    x = 109,941.78

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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.