Home / 203,201.12-280,405.20-112,551.80

Finding the Fourth Proportional to 203,201.12, 280,405.20 and 112,551.80

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Solution

The fourth proportional to 203,201.12, 280,405.20 and 112,551.80 is: 155,314.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,201.12 : 280,405.20 = 112,551.80 : x
  2. Step 2: Convert to fraction form
    203,201.12/280,405.20 = 112,551.80/x
  3. Step 3: Cross multiply
    203,201.12x = 280,405.20 × 112,551.80
  4. Step 4: Simplify right side
    203,201.12x = 31,560,108,587.33
  5. Step 5: Solve for x
    x = 31,560,108,587.33/203,201.12
  6. Step 6: Final answer
    x = 155,314.64

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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.