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Finding the Fourth Proportional to 154,074.80, 231,112.20 and 54,234.20

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Solution

The fourth proportional to 154,074.80, 231,112.20 and 54,234.20 is: 81,351.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,074.80 : 231,112.20 = 54,234.20 : x
  2. Step 2: Convert to fraction form
    154,074.80/231,112.20 = 54,234.20/x
  3. Step 3: Cross multiply
    154,074.80x = 231,112.20 × 54,234.20
  4. Step 4: Simplify right side
    154,074.80x = 12,534,185,277.24
  5. Step 5: Solve for x
    x = 12,534,185,277.24/154,074.80
  6. Step 6: Final answer
    x = 81,351.30

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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.