Home / 203,145,911.28-280,365,289.92-120,639,696.03

Finding the Fourth Proportional to 203,145,911.28, 280,365,289.92 and 120,639,696.03

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Solution

The fourth proportional to 203,145,911.28, 280,365,289.92 and 120,639,696.03 is: 166,496,992.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,145,911.28 : 280,365,289.92 = 120,639,696.03 : x
  2. Step 2: Convert to fraction form
    203,145,911.28/280,365,289.92 = 120,639,696.03/x
  3. Step 3: Cross multiply
    203,145,911.28x = 280,365,289.92 × 120,639,696.03
  4. Step 4: Simplify right side
    203,145,911.28x = 33,823,183,353,311,624
  5. Step 5: Solve for x
    x = 33,823,183,353,311,624/203,145,911.28
  6. Step 6: Final answer
    x = 166,496,992.93

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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.