Home / 118,918.38-164,112.39-67,939.50

Finding the Fourth Proportional to 118,918.38, 164,112.39 and 67,939.50

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Solution

The fourth proportional to 118,918.38, 164,112.39 and 67,939.50 is: 93,759.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,918.38 : 164,112.39 = 67,939.50 : x
  2. Step 2: Convert to fraction form
    118,918.38/164,112.39 = 67,939.50/x
  3. Step 3: Cross multiply
    118,918.38x = 164,112.39 × 67,939.50
  4. Step 4: Simplify right side
    118,918.38x = 11,149,713,720.41
  5. Step 5: Solve for x
    x = 11,149,713,720.41/118,918.38
  6. Step 6: Final answer
    x = 93,759.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.