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Finding the Fourth Proportional to 111,286.68, 166,930.14 and 28,180.68

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Solution

The fourth proportional to 111,286.68, 166,930.14 and 28,180.68 is: 42,271.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,286.68 : 166,930.14 = 28,180.68 : x
  2. Step 2: Convert to fraction form
    111,286.68/166,930.14 = 28,180.68/x
  3. Step 3: Cross multiply
    111,286.68x = 166,930.14 × 28,180.68
  4. Step 4: Simplify right side
    111,286.68x = 4,704,204,857.70
  5. Step 5: Solve for x
    x = 4,704,204,857.70/111,286.68
  6. Step 6: Final answer
    x = 42,271.05

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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.