Home / 154,629.20-231,943.80-80,747.60

Finding the Fourth Proportional to 154,629.20, 231,943.80 and 80,747.60

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Solution

The fourth proportional to 154,629.20, 231,943.80 and 80,747.60 is: 121,121.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,629.20 : 231,943.80 = 80,747.60 : x
  2. Step 2: Convert to fraction form
    154,629.20/231,943.80 = 80,747.60/x
  3. Step 3: Cross multiply
    154,629.20x = 231,943.80 × 80,747.60
  4. Step 4: Simplify right side
    154,629.20x = 18,728,905,184.88
  5. Step 5: Solve for x
    x = 18,728,905,184.88/154,629.20
  6. Step 6: Final answer
    x = 121,121.40

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1.5x scale

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.