Home / 203,835.35-305,839.42-109,040.72

Finding the Fourth Proportional to 203,835.35, 305,839.42 and 109,040.72

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Solution

The fourth proportional to 203,835.35, 305,839.42 and 109,040.72 is: 163,607.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,835.35 : 305,839.42 = 109,040.72 : x
  2. Step 2: Convert to fraction form
    203,835.35/305,839.42 = 109,040.72/x
  3. Step 3: Cross multiply
    203,835.35x = 305,839.42 × 109,040.72
  4. Step 4: Simplify right side
    203,835.35x = 33,348,948,759.38
  5. Step 5: Solve for x
    x = 33,348,948,759.38/203,835.35
  6. Step 6: Final answer
    x = 163,607.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.