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Finding the Fourth Proportional to 103,418.97, 155,161.88 and 50,791.55

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Solution

The fourth proportional to 103,418.97, 155,161.88 and 50,791.55 is: 76,203.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,418.97 : 155,161.88 = 50,791.55 : x
  2. Step 2: Convert to fraction form
    103,418.97/155,161.88 = 50,791.55/x
  3. Step 3: Cross multiply
    103,418.97x = 155,161.88 × 50,791.55
  4. Step 4: Simplify right side
    103,418.97x = 7,880,911,356.35
  5. Step 5: Solve for x
    x = 7,880,911,356.35/103,418.97
  6. Step 6: Final answer
    x = 76,203.73

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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.