Home / 203,485.20-305,186.23-77,081.86

Finding the Fourth Proportional to 203,485.20, 305,186.23 and 77,081.86

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Solution

The fourth proportional to 203,485.20, 305,186.23 and 77,081.86 is: 115,607.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,485.20 : 305,186.23 = 77,081.86 : x
  2. Step 2: Convert to fraction form
    203,485.20/305,186.23 = 77,081.86/x
  3. Step 3: Cross multiply
    203,485.20x = 305,186.23 × 77,081.86
  4. Step 4: Simplify right side
    203,485.20x = 23,524,322,732.62
  5. Step 5: Solve for x
    x = 23,524,322,732.62/203,485.20
  6. Step 6: Final answer
    x = 115,607.05

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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.