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Finding the Fourth Proportional to 163,295.90, 225,332.78 and 91,659.50

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Solution

The fourth proportional to 163,295.90, 225,332.78 and 91,659.50 is: 126,481.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,295.90 : 225,332.78 = 91,659.50 : x
  2. Step 2: Convert to fraction form
    163,295.90/225,332.78 = 91,659.50/x
  3. Step 3: Cross multiply
    163,295.90x = 225,332.78 × 91,659.50
  4. Step 4: Simplify right side
    163,295.90x = 20,653,889,948.41
  5. Step 5: Solve for x
    x = 20,653,889,948.41/163,295.90
  6. Step 6: Final answer
    x = 126,481.37

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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.