Home / 131,357.21-181,202.90-80,394.64

Finding the Fourth Proportional to 131,357.21, 181,202.90 and 80,394.64

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Solution

The fourth proportional to 131,357.21, 181,202.90 and 80,394.64 is: 110,901.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,357.21 : 181,202.90 = 80,394.64 : x
  2. Step 2: Convert to fraction form
    131,357.21/181,202.90 = 80,394.64/x
  3. Step 3: Cross multiply
    131,357.21x = 181,202.90 × 80,394.64
  4. Step 4: Simplify right side
    131,357.21x = 14,567,741,912.46
  5. Step 5: Solve for x
    x = 14,567,741,912.46/131,357.21
  6. Step 6: Final answer
    x = 110,901.73

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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.