Home / 203,702.85-281,161.60-139,198.19

Finding the Fourth Proportional to 203,702.85, 281,161.60 and 139,198.19

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Solution

The fourth proportional to 203,702.85, 281,161.60 and 139,198.19 is: 192,128.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,702.85 : 281,161.60 = 139,198.19 : x
  2. Step 2: Convert to fraction form
    203,702.85/281,161.60 = 139,198.19/x
  3. Step 3: Cross multiply
    203,702.85x = 281,161.60 × 139,198.19
  4. Step 4: Simplify right side
    203,702.85x = 39,137,185,817.50
  5. Step 5: Solve for x
    x = 39,137,185,817.50/203,702.85
  6. Step 6: Final answer
    x = 192,128.81

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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.