Home / 149,739.82-206,635.52-81,755.54

Finding the Fourth Proportional to 149,739.82, 206,635.52 and 81,755.54

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Solution

The fourth proportional to 149,739.82, 206,635.52 and 81,755.54 is: 112,819.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,739.82 : 206,635.52 = 81,755.54 : x
  2. Step 2: Convert to fraction form
    149,739.82/206,635.52 = 81,755.54/x
  3. Step 3: Cross multiply
    149,739.82x = 206,635.52 × 81,755.54
  4. Step 4: Simplify right side
    149,739.82x = 16,893,598,466.88
  5. Step 5: Solve for x
    x = 16,893,598,466.88/149,739.82
  6. Step 6: Final answer
    x = 112,819.68

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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.