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Finding the Fourth Proportional to 188,426.88, 259,992.64 and 107,879.36

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Solution

The fourth proportional to 188,426.88, 259,992.64 and 107,879.36 is: 148,852.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,426.88 : 259,992.64 = 107,879.36 : x
  2. Step 2: Convert to fraction form
    188,426.88/259,992.64 = 107,879.36/x
  3. Step 3: Cross multiply
    188,426.88x = 259,992.64 × 107,879.36
  4. Step 4: Simplify right side
    188,426.88x = 28,047,839,607.91
  5. Step 5: Solve for x
    x = 28,047,839,607.91/188,426.88
  6. Step 6: Final answer
    x = 148,852.65

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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.