Home / 209,211.48-313,640.37-90,793.80

Finding the Fourth Proportional to 209,211.48, 313,640.37 and 90,793.80

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Solution

The fourth proportional to 209,211.48, 313,640.37 and 90,793.80 is: 136,113.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,211.48 : 313,640.37 = 90,793.80 : x
  2. Step 2: Convert to fraction form
    209,211.48/313,640.37 = 90,793.80/x
  3. Step 3: Cross multiply
    209,211.48x = 313,640.37 × 90,793.80
  4. Step 4: Simplify right side
    209,211.48x = 28,476,601,025.71
  5. Step 5: Solve for x
    x = 28,476,601,025.71/209,211.48
  6. Step 6: Final answer
    x = 136,113.95

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1.5x scale

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.