Home / 131,392.18-181,327.80-80,388.96

Finding the Fourth Proportional to 131,392.18, 181,327.80 and 80,388.96

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Solution

The fourth proportional to 131,392.18, 181,327.80 and 80,388.96 is: 110,940.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,392.18 : 181,327.80 = 80,388.96 : x
  2. Step 2: Convert to fraction form
    131,392.18/181,327.80 = 80,388.96/x
  3. Step 3: Cross multiply
    131,392.18x = 181,327.80 × 80,388.96
  4. Step 4: Simplify right side
    131,392.18x = 14,576,753,261.09
  5. Step 5: Solve for x
    x = 14,576,753,261.09/131,392.18
  6. Step 6: Final answer
    x = 110,940.80

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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.