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Finding the Fourth Proportional to 203,604.73, 281,008.25 and 112,989.80

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Solution

The fourth proportional to 203,604.73, 281,008.25 and 112,989.80 is: 155,944.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,604.73 : 281,008.25 = 112,989.80 : x
  2. Step 2: Convert to fraction form
    203,604.73/281,008.25 = 112,989.80/x
  3. Step 3: Cross multiply
    203,604.73x = 281,008.25 × 112,989.80
  4. Step 4: Simplify right side
    203,604.73x = 31,751,065,965.85
  5. Step 5: Solve for x
    x = 31,751,065,965.85/203,604.73
  6. Step 6: Final answer
    x = 155,944.64

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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.