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Finding the Fourth Proportional to 111,998.40, 168,074.40 and 49,713.60

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Solution

The fourth proportional to 111,998.40, 168,074.40 and 49,713.60 is: 74,604.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,998.40 : 168,074.40 = 49,713.60 : x
  2. Step 2: Convert to fraction form
    111,998.40/168,074.40 = 49,713.60/x
  3. Step 3: Cross multiply
    111,998.40x = 168,074.40 × 49,713.60
  4. Step 4: Simplify right side
    111,998.40x = 8,355,583,491.84
  5. Step 5: Solve for x
    x = 8,355,583,491.84/111,998.40
  6. Step 6: Final answer
    x = 74,604.49

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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.