Home / 345,786.87-518,661.39-132,656.97

Finding the Fourth Proportional to 345,786.87, 518,661.39 and 132,656.97

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Solution

The fourth proportional to 345,786.87, 518,661.39 and 132,656.97 is: 198,978.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,786.87 : 518,661.39 = 132,656.97 : x
  2. Step 2: Convert to fraction form
    345,786.87/518,661.39 = 132,656.97/x
  3. Step 3: Cross multiply
    345,786.87x = 518,661.39 × 132,656.97
  4. Step 4: Simplify right side
    345,786.87x = 68,804,048,453.39
  5. Step 5: Solve for x
    x = 68,804,048,453.39/345,786.87
  6. Step 6: Final answer
    x = 198,978.20

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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.