Home / 205,003.20-307,286.10-78,594.60

Finding the Fourth Proportional to 205,003.20, 307,286.10 and 78,594.60

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Solution

The fourth proportional to 205,003.20, 307,286.10 and 78,594.60 is: 117,808.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,003.20 : 307,286.10 = 78,594.60 : x
  2. Step 2: Convert to fraction form
    205,003.20/307,286.10 = 78,594.60/x
  3. Step 3: Cross multiply
    205,003.20x = 307,286.10 × 78,594.60
  4. Step 4: Simplify right side
    205,003.20x = 24,151,028,115.06
  5. Step 5: Solve for x
    x = 24,151,028,115.06/205,003.20
  6. Step 6: Final answer
    x = 117,808.05

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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.