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Finding the Fourth Proportional to 111,245.44, 166,868.88 and 28,139.68

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Solution

The fourth proportional to 111,245.44, 166,868.88 and 28,139.68 is: 42,209.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,245.44 : 166,868.88 = 28,139.68 : x
  2. Step 2: Convert to fraction form
    111,245.44/166,868.88 = 28,139.68/x
  3. Step 3: Cross multiply
    111,245.44x = 166,868.88 × 28,139.68
  4. Step 4: Simplify right side
    111,245.44x = 4,695,636,885.16
  5. Step 5: Solve for x
    x = 4,695,636,885.16/111,245.44
  6. Step 6: Final answer
    x = 42,209.70

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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.