Home / 203,016.78-280,158.75-111,135.85

Finding the Fourth Proportional to 203,016.78, 280,158.75 and 111,135.85

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Solution

The fourth proportional to 203,016.78, 280,158.75 and 111,135.85 is: 153,365.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,016.78 : 280,158.75 = 111,135.85 : x
  2. Step 2: Convert to fraction form
    203,016.78/280,158.75 = 111,135.85/x
  3. Step 3: Cross multiply
    203,016.78x = 280,158.75 × 111,135.85
  4. Step 4: Simplify right side
    203,016.78x = 31,135,680,115.79
  5. Step 5: Solve for x
    x = 31,135,680,115.79/203,016.78
  6. Step 6: Final answer
    x = 153,365.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.