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Finding the Fourth Proportional to 163,431.58, 225,511.02 and 91,797.88

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Solution

The fourth proportional to 163,431.58, 225,511.02 and 91,797.88 is: 126,667.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,431.58 : 225,511.02 = 91,797.88 : x
  2. Step 2: Convert to fraction form
    163,431.58/225,511.02 = 91,797.88/x
  3. Step 3: Cross multiply
    163,431.58x = 225,511.02 × 91,797.88
  4. Step 4: Simplify right side
    163,431.58x = 20,701,433,552.64
  5. Step 5: Solve for x
    x = 20,701,433,552.64/163,431.58
  6. Step 6: Final answer
    x = 126,667.28

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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.