Home / 209,279.90-313,912.82-90,951.26

Finding the Fourth Proportional to 209,279.90, 313,912.82 and 90,951.26

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Solution

The fourth proportional to 209,279.90, 313,912.82 and 90,951.26 is: 136,423.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,279.90 : 313,912.82 = 90,951.26 : x
  2. Step 2: Convert to fraction form
    209,279.90/313,912.82 = 90,951.26/x
  3. Step 3: Cross multiply
    209,279.90x = 313,912.82 × 90,951.26
  4. Step 4: Simplify right side
    209,279.90x = 28,550,764,655.37
  5. Step 5: Solve for x
    x = 28,550,764,655.37/209,279.90
  6. Step 6: Final answer
    x = 136,423.82

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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.