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Finding the Fourth Proportional to 203,661.42, 281,040.08 and 123,041.31

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Solution

The fourth proportional to 203,661.42, 281,040.08 and 123,041.31 is: 169,789.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,661.42 : 281,040.08 = 123,041.31 : x
  2. Step 2: Convert to fraction form
    203,661.42/281,040.08 = 123,041.31/x
  3. Step 3: Cross multiply
    203,661.42x = 281,040.08 × 123,041.31
  4. Step 4: Simplify right side
    203,661.42x = 34,579,538,990.50
  5. Step 5: Solve for x
    x = 34,579,538,990.50/203,661.42
  6. Step 6: Final answer
    x = 169,789.34

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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.