Home / 203,778.83-281,223.86-113,136.05

Finding the Fourth Proportional to 203,778.83, 281,223.86 and 113,136.05

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Solution

The fourth proportional to 203,778.83, 281,223.86 and 113,136.05 is: 156,132.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,778.83 : 281,223.86 = 113,136.05 : x
  2. Step 2: Convert to fraction form
    203,778.83/281,223.86 = 113,136.05/x
  3. Step 3: Cross multiply
    203,778.83x = 281,223.86 × 113,136.05
  4. Step 4: Simplify right side
    203,778.83x = 31,816,554,714.35
  5. Step 5: Solve for x
    x = 31,816,554,714.35/203,778.83
  6. Step 6: Final answer
    x = 156,132.78

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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.