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Finding the Fourth Proportional to 111,809.09, 167,791.40 and 72,268.13

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Solution

The fourth proportional to 111,809.09, 167,791.40 and 72,268.13 is: 108,452.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,809.09 : 167,791.40 = 72,268.13 : x
  2. Step 2: Convert to fraction form
    111,809.09/167,791.40 = 72,268.13/x
  3. Step 3: Cross multiply
    111,809.09x = 167,791.40 × 72,268.13
  4. Step 4: Simplify right side
    111,809.09x = 12,125,969,507.78
  5. Step 5: Solve for x
    x = 12,125,969,507.78/111,809.09
  6. Step 6: Final answer
    x = 108,452.45

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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.