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Finding the Fourth Proportional to 118,796.39, 178,069.80 and 43,868.78

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Solution

The fourth proportional to 118,796.39, 178,069.80 and 43,868.78 is: 65,757.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,796.39 : 178,069.80 = 43,868.78 : x
  2. Step 2: Convert to fraction form
    118,796.39/178,069.80 = 43,868.78/x
  3. Step 3: Cross multiply
    118,796.39x = 178,069.80 × 43,868.78
  4. Step 4: Simplify right side
    118,796.39x = 7,811,704,880.84
  5. Step 5: Solve for x
    x = 7,811,704,880.84/118,796.39
  6. Step 6: Final answer
    x = 65,757.09

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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.