Home / 100,867.20-151,446.60-76,081.20

Finding the Fourth Proportional to 100,867.20, 151,446.60 and 76,081.20

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Solution

The fourth proportional to 100,867.20, 151,446.60 and 76,081.20 is: 114,231.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,867.20 : 151,446.60 = 76,081.20 : x
  2. Step 2: Convert to fraction form
    100,867.20/151,446.60 = 76,081.20/x
  3. Step 3: Cross multiply
    100,867.20x = 151,446.60 × 76,081.20
  4. Step 4: Simplify right side
    100,867.20x = 11,522,239,063.92
  5. Step 5: Solve for x
    x = 11,522,239,063.92/100,867.20
  6. Step 6: Final answer
    x = 114,231.77

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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.