Home / 203,211.72-280,569.18-126,847.12

Finding the Fourth Proportional to 203,211.72, 280,569.18 and 126,847.12

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Solution

The fourth proportional to 203,211.72, 280,569.18 and 126,847.12 is: 175,134.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,211.72 : 280,569.18 = 126,847.12 : x
  2. Step 2: Convert to fraction form
    203,211.72/280,569.18 = 126,847.12/x
  3. Step 3: Cross multiply
    203,211.72x = 280,569.18 × 126,847.12
  4. Step 4: Simplify right side
    203,211.72x = 35,589,392,443.76
  5. Step 5: Solve for x
    x = 35,589,392,443.76/203,211.72
  6. Step 6: Final answer
    x = 175,134.55

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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.