Home / 204,078.11-306,120.20-77,725.32

Finding the Fourth Proportional to 204,078.11, 306,120.20 and 77,725.32

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Solution

The fourth proportional to 204,078.11, 306,120.20 and 77,725.32 is: 116,589.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,078.11 : 306,120.20 = 77,725.32 : x
  2. Step 2: Convert to fraction form
    204,078.11/306,120.20 = 77,725.32/x
  3. Step 3: Cross multiply
    204,078.11x = 306,120.20 × 77,725.32
  4. Step 4: Simplify right side
    204,078.11x = 23,793,290,114.84
  5. Step 5: Solve for x
    x = 23,793,290,114.84/204,078.11
  6. Step 6: Final answer
    x = 116,589.14

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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.