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Finding the Fourth Proportional to 111,645.88, 154,027.68 and 63,873.64

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Solution

The fourth proportional to 111,645.88, 154,027.68 and 63,873.64 is: 88,120.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,645.88 : 154,027.68 = 63,873.64 : x
  2. Step 2: Convert to fraction form
    111,645.88/154,027.68 = 63,873.64/x
  3. Step 3: Cross multiply
    111,645.88x = 154,027.68 × 63,873.64
  4. Step 4: Simplify right side
    111,645.88x = 9,838,308,582.36
  5. Step 5: Solve for x
    x = 9,838,308,582.36/111,645.88
  6. Step 6: Final answer
    x = 88,120.66

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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.