Home / 111,667,939.20-167,501,908.80-85,839,906.60

Finding the Fourth Proportional to 111,667,939.20, 167,501,908.80 and 85,839,906.60

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Solution

The fourth proportional to 111,667,939.20, 167,501,908.80 and 85,839,906.60 is: 128,759,859.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,667,939.20 : 167,501,908.80 = 85,839,906.60 : x
  2. Step 2: Convert to fraction form
    111,667,939.20/167,501,908.80 = 85,839,906.60/x
  3. Step 3: Cross multiply
    111,667,939.20x = 167,501,908.80 × 85,839,906.60
  4. Step 4: Simplify right side
    111,667,939.20x = 14,378,348,206,713,718
  5. Step 5: Solve for x
    x = 14,378,348,206,713,718/111,667,939.20
  6. Step 6: Final answer
    x = 128,759,859.90

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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.