Home / 120,728.20-181,092.30-109,841.80

Finding the Fourth Proportional to 120,728.20, 181,092.30 and 109,841.80

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Solution

The fourth proportional to 120,728.20, 181,092.30 and 109,841.80 is: 164,762.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,728.20 : 181,092.30 = 109,841.80 : x
  2. Step 2: Convert to fraction form
    120,728.20/181,092.30 = 109,841.80/x
  3. Step 3: Cross multiply
    120,728.20x = 181,092.30 × 109,841.80
  4. Step 4: Simplify right side
    120,728.20x = 19,891,504,198.14
  5. Step 5: Solve for x
    x = 19,891,504,198.14/120,728.20
  6. Step 6: Final answer
    x = 164,762.70

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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.