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Finding the Fourth Proportional to 203,963.56, 281,489.70 and 117,926.20

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Solution

The fourth proportional to 203,963.56, 281,489.70 and 117,926.20 is: 162,749.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,963.56 : 281,489.70 = 117,926.20 : x
  2. Step 2: Convert to fraction form
    203,963.56/281,489.70 = 117,926.20/x
  3. Step 3: Cross multiply
    203,963.56x = 281,489.70 × 117,926.20
  4. Step 4: Simplify right side
    203,963.56x = 33,195,010,660.14
  5. Step 5: Solve for x
    x = 33,195,010,660.14/203,963.56
  6. Step 6: Final answer
    x = 162,749.71

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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.