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Finding the Fourth Proportional to 111,998.40, 168,343.20 and 109,924.80

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Solution

The fourth proportional to 111,998.40, 168,343.20 and 109,924.80 is: 165,226.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,998.40 : 168,343.20 = 109,924.80 : x
  2. Step 2: Convert to fraction form
    111,998.40/168,343.20 = 109,924.80/x
  3. Step 3: Cross multiply
    111,998.40x = 168,343.20 × 109,924.80
  4. Step 4: Simplify right side
    111,998.40x = 18,505,092,591.36
  5. Step 5: Solve for x
    x = 18,505,092,591.36/111,998.40
  6. Step 6: Final answer
    x = 165,226.40

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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.