Home / 203,720.85-281,121.48-113,072.49

Finding the Fourth Proportional to 203,720.85, 281,121.48 and 113,072.49

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Solution

The fourth proportional to 203,720.85, 281,121.48 and 113,072.49 is: 156,032.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,720.85 : 281,121.48 = 113,072.49 : x
  2. Step 2: Convert to fraction form
    203,720.85/281,121.48 = 113,072.49/x
  3. Step 3: Cross multiply
    203,720.85x = 281,121.48 × 113,072.49
  4. Step 4: Simplify right side
    203,720.85x = 31,787,105,736.09
  5. Step 5: Solve for x
    x = 31,787,105,736.09/203,720.85
  6. Step 6: Final answer
    x = 156,032.66

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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.