Home / 204,825.31-307,171.51-78,458.83

Finding the Fourth Proportional to 204,825.31, 307,171.51 and 78,458.83

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Solution

The fourth proportional to 204,825.31, 307,171.51 and 78,458.83 is: 117,662.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,825.31 : 307,171.51 = 78,458.83 : x
  2. Step 2: Convert to fraction form
    204,825.31/307,171.51 = 78,458.83/x
  3. Step 3: Cross multiply
    204,825.31x = 307,171.51 × 78,458.83
  4. Step 4: Simplify right side
    204,825.31x = 24,100,316,319.86
  5. Step 5: Solve for x
    x = 24,100,316,319.86/204,825.31
  6. Step 6: Final answer
    x = 117,662.79

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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.