Home / 203,089.57-280,272.37-112,445.54

Finding the Fourth Proportional to 203,089.57, 280,272.37 and 112,445.54

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Solution

The fourth proportional to 203,089.57, 280,272.37 and 112,445.54 is: 155,179.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,089.57 : 280,272.37 = 112,445.54 : x
  2. Step 2: Convert to fraction form
    203,089.57/280,272.37 = 112,445.54/x
  3. Step 3: Cross multiply
    203,089.57x = 280,272.37 × 112,445.54
  4. Step 4: Simplify right side
    203,089.57x = 31,515,377,991.73
  5. Step 5: Solve for x
    x = 31,515,377,991.73/203,089.57
  6. Step 6: Final answer
    x = 155,179.70

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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.