Home / 203,190.12-280,390.01-112,540.69

Finding the Fourth Proportional to 203,190.12, 280,390.01 and 112,540.69

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Solution

The fourth proportional to 203,190.12, 280,390.01 and 112,540.69 is: 155,299.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,190.12 : 280,390.01 = 112,540.69 : x
  2. Step 2: Convert to fraction form
    203,190.12/280,390.01 = 112,540.69/x
  3. Step 3: Cross multiply
    203,190.12x = 280,390.01 × 112,540.69
  4. Step 4: Simplify right side
    203,190.12x = 31,555,284,982.29
  5. Step 5: Solve for x
    x = 31,555,284,982.29/203,190.12
  6. Step 6: Final answer
    x = 155,299.31

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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.