Home / 203,778.32-305,677.20-85,453.52

Finding the Fourth Proportional to 203,778.32, 305,677.20 and 85,453.52

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Solution

The fourth proportional to 203,778.32, 305,677.20 and 85,453.52 is: 128,184.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,778.32 : 305,677.20 = 85,453.52 : x
  2. Step 2: Convert to fraction form
    203,778.32/305,677.20 = 85,453.52/x
  3. Step 3: Cross multiply
    203,778.32x = 305,677.20 × 85,453.52
  4. Step 4: Simplify right side
    203,778.32x = 26,121,192,723.74
  5. Step 5: Solve for x
    x = 26,121,192,723.74/203,778.32
  6. Step 6: Final answer
    x = 128,184.36

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1.5x scale

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.