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Finding the Fourth Proportional to 110,724.80, 166,087.20 and 108,780.80

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Solution

The fourth proportional to 110,724.80, 166,087.20 and 108,780.80 is: 163,171.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,724.80 : 166,087.20 = 108,780.80 : x
  2. Step 2: Convert to fraction form
    110,724.80/166,087.20 = 108,780.80/x
  3. Step 3: Cross multiply
    110,724.80x = 166,087.20 × 108,780.80
  4. Step 4: Simplify right side
    110,724.80x = 18,067,098,485.76
  5. Step 5: Solve for x
    x = 18,067,098,485.76/110,724.80
  6. Step 6: Final answer
    x = 163,171.20

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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.