Home / 204,780.19-307,308.67-71,661.60

Finding the Fourth Proportional to 204,780.19, 307,308.67 and 71,661.60

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Solution

The fourth proportional to 204,780.19, 307,308.67 and 71,661.60 is: 107,540.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,780.19 : 307,308.67 = 71,661.60 : x
  2. Step 2: Convert to fraction form
    204,780.19/307,308.67 = 71,661.60/x
  3. Step 3: Cross multiply
    204,780.19x = 307,308.67 × 71,661.60
  4. Step 4: Simplify right side
    204,780.19x = 22,022,230,986.07
  5. Step 5: Solve for x
    x = 22,022,230,986.07/204,780.19
  6. Step 6: Final answer
    x = 107,540.83

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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.