Home / 126,939.62-175,178.60-69,578.50

Finding the Fourth Proportional to 126,939.62, 175,178.60 and 69,578.50

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Solution

The fourth proportional to 126,939.62, 175,178.60 and 69,578.50 is: 96,019.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,939.62 : 175,178.60 = 69,578.50 : x
  2. Step 2: Convert to fraction form
    126,939.62/175,178.60 = 69,578.50/x
  3. Step 3: Cross multiply
    126,939.62x = 175,178.60 × 69,578.50
  4. Step 4: Simplify right side
    126,939.62x = 12,188,664,220.10
  5. Step 5: Solve for x
    x = 12,188,664,220.10/126,939.62
  6. Step 6: Final answer
    x = 96,019.38

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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.