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Finding the Fourth Proportional to 110,738.80, 166,108.20 and 80,995.60

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Solution

The fourth proportional to 110,738.80, 166,108.20 and 80,995.60 is: 121,493.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,738.80 : 166,108.20 = 80,995.60 : x
  2. Step 2: Convert to fraction form
    110,738.80/166,108.20 = 80,995.60/x
  3. Step 3: Cross multiply
    110,738.80x = 166,108.20 × 80,995.60
  4. Step 4: Simplify right side
    110,738.80x = 13,454,033,323.92
  5. Step 5: Solve for x
    x = 13,454,033,323.92/110,738.80
  6. Step 6: Final answer
    x = 121,493.40

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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.