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Finding the Fourth Proportional to 163,451.60, 225,585.78 and 91,836.98

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Solution

The fourth proportional to 163,451.60, 225,585.78 and 91,836.98 is: 126,747.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,451.60 : 225,585.78 = 91,836.98 : x
  2. Step 2: Convert to fraction form
    163,451.60/225,585.78 = 91,836.98/x
  3. Step 3: Cross multiply
    163,451.60x = 225,585.78 × 91,836.98
  4. Step 4: Simplify right side
    163,451.60x = 20,717,116,766.14
  5. Step 5: Solve for x
    x = 20,717,116,766.14/163,451.60
  6. Step 6: Final answer
    x = 126,747.71

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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.