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Finding the Fourth Proportional to 192,636.16, 288,910.39 and 72,705.82

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Solution

The fourth proportional to 192,636.16, 288,910.39 and 72,705.82 is: 109,042.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,636.16 : 288,910.39 = 72,705.82 : x
  2. Step 2: Convert to fraction form
    192,636.16/288,910.39 = 72,705.82/x
  3. Step 3: Cross multiply
    192,636.16x = 288,910.39 × 72,705.82
  4. Step 4: Simplify right side
    192,636.16x = 21,005,466,811.47
  5. Step 5: Solve for x
    x = 21,005,466,811.47/192,636.16
  6. Step 6: Final answer
    x = 109,042.18

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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.