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Finding the Fourth Proportional to 120,786.60, 181,179.90 and 41,908.80

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Solution

The fourth proportional to 120,786.60, 181,179.90 and 41,908.80 is: 62,863.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,786.60 : 181,179.90 = 41,908.80 : x
  2. Step 2: Convert to fraction form
    120,786.60/181,179.90 = 41,908.80/x
  3. Step 3: Cross multiply
    120,786.60x = 181,179.90 × 41,908.80
  4. Step 4: Simplify right side
    120,786.60x = 7,593,032,193.12
  5. Step 5: Solve for x
    x = 7,593,032,193.12/120,786.60
  6. Step 6: Final answer
    x = 62,863.20

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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.