Home / 203,042.36-280,198.54-111,167.60

Finding the Fourth Proportional to 203,042.36, 280,198.54 and 111,167.60

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Solution

The fourth proportional to 203,042.36, 280,198.54 and 111,167.60 is: 153,411.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,042.36 : 280,198.54 = 111,167.60 : x
  2. Step 2: Convert to fraction form
    203,042.36/280,198.54 = 111,167.60/x
  3. Step 3: Cross multiply
    203,042.36x = 280,198.54 × 111,167.60
  4. Step 4: Simplify right side
    203,042.36x = 31,148,997,327.95
  5. Step 5: Solve for x
    x = 31,148,997,327.95/203,042.36
  6. Step 6: Final answer
    x = 153,411.33

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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.