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Finding the Fourth Proportional to 185,503.77, 278,375.94 and 67,165.20

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Solution

The fourth proportional to 185,503.77, 278,375.94 and 67,165.20 is: 100,791.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,503.77 : 278,375.94 = 67,165.20 : x
  2. Step 2: Convert to fraction form
    185,503.77/278,375.94 = 67,165.20/x
  3. Step 3: Cross multiply
    185,503.77x = 278,375.94 × 67,165.20
  4. Step 4: Simplify right side
    185,503.77x = 18,697,175,685.29
  5. Step 5: Solve for x
    x = 18,697,175,685.29/185,503.77
  6. Step 6: Final answer
    x = 100,791.35

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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.