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Finding the Fourth Proportional to 163,067.61, 225,043.11 and 91,451.73

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Solution

The fourth proportional to 163,067.61, 225,043.11 and 91,451.73 is: 126,208.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,067.61 : 225,043.11 = 91,451.73 : x
  2. Step 2: Convert to fraction form
    163,067.61/225,043.11 = 91,451.73/x
  3. Step 3: Cross multiply
    163,067.61x = 225,043.11 × 91,451.73
  4. Step 4: Simplify right side
    163,067.61x = 20,580,581,734.08
  5. Step 5: Solve for x
    x = 20,580,581,734.08/163,067.61
  6. Step 6: Final answer
    x = 126,208.89

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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.