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Finding the Fourth Proportional to 154,891.80, 231,819.30 and 108,235.80

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Solution

The fourth proportional to 154,891.80, 231,819.30 and 108,235.80 is: 161,991.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,891.80 : 231,819.30 = 108,235.80 : x
  2. Step 2: Convert to fraction form
    154,891.80/231,819.30 = 108,235.80/x
  3. Step 3: Cross multiply
    154,891.80x = 231,819.30 × 108,235.80
  4. Step 4: Simplify right side
    154,891.80x = 25,091,147,390.94
  5. Step 5: Solve for x
    x = 25,091,147,390.94/154,891.80
  6. Step 6: Final answer
    x = 161,991.45

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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.