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Finding the Fourth Proportional to 111,791.36, 154,335.84 and 74,116.64

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Solution

The fourth proportional to 111,791.36, 154,335.84 and 74,116.64 is: 102,323.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,791.36 : 154,335.84 = 74,116.64 : x
  2. Step 2: Convert to fraction form
    111,791.36/154,335.84 = 74,116.64/x
  3. Step 3: Cross multiply
    111,791.36x = 154,335.84 × 74,116.64
  4. Step 4: Simplify right side
    111,791.36x = 11,438,853,892.38
  5. Step 5: Solve for x
    x = 11,438,853,892.38/111,791.36
  6. Step 6: Final answer
    x = 102,323.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.