Home / 203,145,928.21-280,365,313.23-120,639,712.96

Finding the Fourth Proportional to 203,145,928.21, 280,365,313.23 and 120,639,712.96

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Solution

The fourth proportional to 203,145,928.21, 280,365,313.23 and 120,639,712.96 is: 166,497,016.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,145,928.21 : 280,365,313.23 = 120,639,712.96 : x
  2. Step 2: Convert to fraction form
    203,145,928.21/280,365,313.23 = 120,639,712.96/x
  3. Step 3: Cross multiply
    203,145,928.21x = 280,365,313.23 × 120,639,712.96
  4. Step 4: Simplify right side
    203,145,928.21x = 33,823,190,912,007,692
  5. Step 5: Solve for x
    x = 33,823,190,912,007,692/203,145,928.21
  6. Step 6: Final answer
    x = 166,497,016.26

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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.