Home / 121,704.96-182,291.52-100,405.44

Finding the Fourth Proportional to 121,704.96, 182,291.52 and 100,405.44

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Solution

The fourth proportional to 121,704.96, 182,291.52 and 100,405.44 is: 150,388.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,704.96 : 182,291.52 = 100,405.44 : x
  2. Step 2: Convert to fraction form
    121,704.96/182,291.52 = 100,405.44/x
  3. Step 3: Cross multiply
    121,704.96x = 182,291.52 × 100,405.44
  4. Step 4: Simplify right side
    121,704.96x = 18,303,060,273.87
  5. Step 5: Solve for x
    x = 18,303,060,273.87/121,704.96
  6. Step 6: Final answer
    x = 150,388.78

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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.