Home / 203,819.90-305,848.92-85,481.33

Finding the Fourth Proportional to 203,819.90, 305,848.92 and 85,481.33

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Solution

The fourth proportional to 203,819.90, 305,848.92 and 85,481.33 is: 128,271.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,819.90 : 305,848.92 = 85,481.33 : x
  2. Step 2: Convert to fraction form
    203,819.90/305,848.92 = 85,481.33/x
  3. Step 3: Cross multiply
    203,819.90x = 305,848.92 × 85,481.33
  4. Step 4: Simplify right side
    203,819.90x = 26,144,372,460.66
  5. Step 5: Solve for x
    x = 26,144,372,460.66/203,819.90
  6. Step 6: Final answer
    x = 128,271.93

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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.