Home / 203,723.80-305,816.10-120,664.60

Finding the Fourth Proportional to 203,723.80, 305,816.10 and 120,664.60

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Solution

The fourth proportional to 203,723.80, 305,816.10 and 120,664.60 is: 181,133.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,723.80 : 305,816.10 = 120,664.60 : x
  2. Step 2: Convert to fraction form
    203,723.80/305,816.10 = 120,664.60/x
  3. Step 3: Cross multiply
    203,723.80x = 305,816.10 × 120,664.60
  4. Step 4: Simplify right side
    203,723.80x = 36,901,177,380.06
  5. Step 5: Solve for x
    x = 36,901,177,380.06/203,723.80
  6. Step 6: Final answer
    x = 181,133.36

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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.