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Finding the Fourth Proportional to 111,643.26, 154,067.72 and 63,896.63

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Solution

The fourth proportional to 111,643.26, 154,067.72 and 63,896.63 is: 88,177.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,643.26 : 154,067.72 = 63,896.63 : x
  2. Step 2: Convert to fraction form
    111,643.26/154,067.72 = 63,896.63/x
  3. Step 3: Cross multiply
    111,643.26x = 154,067.72 × 63,896.63
  4. Step 4: Simplify right side
    111,643.26x = 9,844,407,009.96
  5. Step 5: Solve for x
    x = 9,844,407,009.96/111,643.26
  6. Step 6: Final answer
    x = 88,177.35

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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.