Home / 203,023.20-280,190.40-112,400.64

Finding the Fourth Proportional to 203,023.20, 280,190.40 and 112,400.64

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Solution

The fourth proportional to 203,023.20, 280,190.40 and 112,400.64 is: 155,123.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,023.20 : 280,190.40 = 112,400.64 : x
  2. Step 2: Convert to fraction form
    203,023.20/280,190.40 = 112,400.64/x
  3. Step 3: Cross multiply
    203,023.20x = 280,190.40 × 112,400.64
  4. Step 4: Simplify right side
    203,023.20x = 31,493,580,281.86
  5. Step 5: Solve for x
    x = 31,493,580,281.86/203,023.20
  6. Step 6: Final answer
    x = 155,123.06

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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.