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Finding the Fourth Proportional to 192,686.45, 288,906.35 and 92,647.40

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Solution

The fourth proportional to 192,686.45, 288,906.35 and 92,647.40 is: 138,911.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,686.45 : 288,906.35 = 92,647.40 : x
  2. Step 2: Convert to fraction form
    192,686.45/288,906.35 = 92,647.40/x
  3. Step 3: Cross multiply
    192,686.45x = 288,906.35 × 92,647.40
  4. Step 4: Simplify right side
    192,686.45x = 26,766,420,263.22
  5. Step 5: Solve for x
    x = 26,766,420,263.22/192,686.45
  6. Step 6: Final answer
    x = 138,911.80

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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.