Home / 73,188.20-109,786.10-20,601.78

Finding the Fourth Proportional to 73,188.20, 109,786.10 and 20,601.78

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Solution

The fourth proportional to 73,188.20, 109,786.10 and 20,601.78 is: 30,903.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,188.20 : 109,786.10 = 20,601.78 : x
  2. Step 2: Convert to fraction form
    73,188.20/109,786.10 = 20,601.78/x
  3. Step 3: Cross multiply
    73,188.20x = 109,786.10 × 20,601.78
  4. Step 4: Simplify right side
    73,188.20x = 2,261,788,976.25
  5. Step 5: Solve for x
    x = 2,261,788,976.25/73,188.20
  6. Step 6: Final answer
    x = 30,903.74

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1.5x scale

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.