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Finding the Fourth Proportional to 111,446.40, 167,169.60 and 105,322.80

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Solution

The fourth proportional to 111,446.40, 167,169.60 and 105,322.80 is: 157,984.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,446.40 : 167,169.60 = 105,322.80 : x
  2. Step 2: Convert to fraction form
    111,446.40/167,169.60 = 105,322.80/x
  3. Step 3: Cross multiply
    111,446.40x = 167,169.60 × 105,322.80
  4. Step 4: Simplify right side
    111,446.40x = 17,606,770,346.88
  5. Step 5: Solve for x
    x = 17,606,770,346.88/111,446.40
  6. Step 6: Final answer
    x = 157,984.20

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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.