Home / 107,840.20-161,906.10-68,474.20

Finding the Fourth Proportional to 107,840.20, 161,906.10 and 68,474.20

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Solution

The fourth proportional to 107,840.20, 161,906.10 and 68,474.20 is: 102,803.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,840.20 : 161,906.10 = 68,474.20 : x
  2. Step 2: Convert to fraction form
    107,840.20/161,906.10 = 68,474.20/x
  3. Step 3: Cross multiply
    107,840.20x = 161,906.10 × 68,474.20
  4. Step 4: Simplify right side
    107,840.20x = 11,086,390,672.62
  5. Step 5: Solve for x
    x = 11,086,390,672.62/107,840.20
  6. Step 6: Final answer
    x = 102,803.88

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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.