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Finding the Fourth Proportional to 111,996.40, 167,994.60 and 28,890.40

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Solution

The fourth proportional to 111,996.40, 167,994.60 and 28,890.40 is: 43,335.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,996.40 : 167,994.60 = 28,890.40 : x
  2. Step 2: Convert to fraction form
    111,996.40/167,994.60 = 28,890.40/x
  3. Step 3: Cross multiply
    111,996.40x = 167,994.60 × 28,890.40
  4. Step 4: Simplify right side
    111,996.40x = 4,853,431,191.84
  5. Step 5: Solve for x
    x = 4,853,431,191.84/111,996.40
  6. Step 6: Final answer
    x = 43,335.60

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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.