Home / 107,906.20-161,729.70-55,288.60

Finding the Fourth Proportional to 107,906.20, 161,729.70 and 55,288.60

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Solution

The fourth proportional to 107,906.20, 161,729.70 and 55,288.60 is: 82,866.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,906.20 : 161,729.70 = 55,288.60 : x
  2. Step 2: Convert to fraction form
    107,906.20/161,729.70 = 55,288.60/x
  3. Step 3: Cross multiply
    107,906.20x = 161,729.70 × 55,288.60
  4. Step 4: Simplify right side
    107,906.20x = 8,941,808,691.42
  5. Step 5: Solve for x
    x = 8,941,808,691.42/107,906.20
  6. Step 6: Final answer
    x = 82,866.50

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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.