Home / 203,145,837.30-280,365,187.82-120,639,622.05

Finding the Fourth Proportional to 203,145,837.30, 280,365,187.82 and 120,639,622.05

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Solution

The fourth proportional to 203,145,837.30, 280,365,187.82 and 120,639,622.05 is: 166,496,890.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,145,837.30 : 280,365,187.82 = 120,639,622.05 : x
  2. Step 2: Convert to fraction form
    203,145,837.30/280,365,187.82 = 120,639,622.05/x
  3. Step 3: Cross multiply
    203,145,837.30x = 280,365,187.82 × 120,639,622.05
  4. Step 4: Simplify right side
    203,145,837.30x = 33,823,150,293,978,864
  5. Step 5: Solve for x
    x = 33,823,150,293,978,864/203,145,837.30
  6. Step 6: Final answer
    x = 166,496,890.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.