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Finding the Fourth Proportional to 118,578.20, 177,992.49 and 115,900.88

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Solution

The fourth proportional to 118,578.20, 177,992.49 and 115,900.88 is: 173,973.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,578.20 : 177,992.49 = 115,900.88 : x
  2. Step 2: Convert to fraction form
    118,578.20/177,992.49 = 115,900.88/x
  3. Step 3: Cross multiply
    118,578.20x = 177,992.49 × 115,900.88
  4. Step 4: Simplify right side
    118,578.20x = 20,629,486,224.39
  5. Step 5: Solve for x
    x = 20,629,486,224.39/118,578.20
  6. Step 6: Final answer
    x = 173,973.68

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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.