Home / 220,917.75-331,174.14-86,072.79

Finding the Fourth Proportional to 220,917.75, 331,174.14 and 86,072.79

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Solution

The fourth proportional to 220,917.75, 331,174.14 and 86,072.79 is: 129,030.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,917.75 : 331,174.14 = 86,072.79 : x
  2. Step 2: Convert to fraction form
    220,917.75/331,174.14 = 86,072.79/x
  3. Step 3: Cross multiply
    220,917.75x = 331,174.14 × 86,072.79
  4. Step 4: Simplify right side
    220,917.75x = 28,505,082,205.65
  5. Step 5: Solve for x
    x = 28,505,082,205.65/220,917.75
  6. Step 6: Final answer
    x = 129,030.29

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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.