Home / 204,067.08-306,219.60-85,729.32

Finding the Fourth Proportional to 204,067.08, 306,219.60 and 85,729.32

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Solution

The fourth proportional to 204,067.08, 306,219.60 and 85,729.32 is: 128,643.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,067.08 : 306,219.60 = 85,729.32 : x
  2. Step 2: Convert to fraction form
    204,067.08/306,219.60 = 85,729.32/x
  3. Step 3: Cross multiply
    204,067.08x = 306,219.60 × 85,729.32
  4. Step 4: Simplify right side
    204,067.08x = 26,251,998,078.67
  5. Step 5: Solve for x
    x = 26,251,998,078.67/204,067.08
  6. Step 6: Final answer
    x = 128,643.96

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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.