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Finding the Fourth Proportional to 111,939.20, 167,908.80 and 110,902.40

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Solution

The fourth proportional to 111,939.20, 167,908.80 and 110,902.40 is: 166,353.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,939.20 : 167,908.80 = 110,902.40 : x
  2. Step 2: Convert to fraction form
    111,939.20/167,908.80 = 110,902.40/x
  3. Step 3: Cross multiply
    111,939.20x = 167,908.80 × 110,902.40
  4. Step 4: Simplify right side
    111,939.20x = 18,621,488,901.12
  5. Step 5: Solve for x
    x = 18,621,488,901.12/111,939.20
  6. Step 6: Final answer
    x = 166,353.60

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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.