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Finding the Fourth Proportional to 109,367.40, 163,662.30 and 75,930.60

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Solution

The fourth proportional to 109,367.40, 163,662.30 and 75,930.60 is: 113,625.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,367.40 : 163,662.30 = 75,930.60 : x
  2. Step 2: Convert to fraction form
    109,367.40/163,662.30 = 75,930.60/x
  3. Step 3: Cross multiply
    109,367.40x = 163,662.30 × 75,930.60
  4. Step 4: Simplify right side
    109,367.40x = 12,426,976,636.38
  5. Step 5: Solve for x
    x = 12,426,976,636.38/109,367.40
  6. Step 6: Final answer
    x = 113,625.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.