Home / 154,627.20-231,940.80-80,745.60

Finding the Fourth Proportional to 154,627.20, 231,940.80 and 80,745.60

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Solution

The fourth proportional to 154,627.20, 231,940.80 and 80,745.60 is: 121,118.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,627.20 : 231,940.80 = 80,745.60 : x
  2. Step 2: Convert to fraction form
    154,627.20/231,940.80 = 80,745.60/x
  3. Step 3: Cross multiply
    154,627.20x = 231,940.80 × 80,745.60
  4. Step 4: Simplify right side
    154,627.20x = 18,728,199,060.48
  5. Step 5: Solve for x
    x = 18,728,199,060.48/154,627.20
  6. Step 6: Final answer
    x = 121,118.40

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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.