Home / 203,776.32-305,674.20-85,451.52

Finding the Fourth Proportional to 203,776.32, 305,674.20 and 85,451.52

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Solution

The fourth proportional to 203,776.32, 305,674.20 and 85,451.52 is: 128,181.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,776.32 : 305,674.20 = 85,451.52 : x
  2. Step 2: Convert to fraction form
    203,776.32/305,674.20 = 85,451.52/x
  3. Step 3: Cross multiply
    203,776.32x = 305,674.20 × 85,451.52
  4. Step 4: Simplify right side
    203,776.32x = 26,120,325,014.78
  5. Step 5: Solve for x
    x = 26,120,325,014.78/203,776.32
  6. Step 6: Final answer
    x = 128,181.36

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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.