Home / 209,220.20-313,830.30-76,104.80

Finding the Fourth Proportional to 209,220.20, 313,830.30 and 76,104.80

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Solution

The fourth proportional to 209,220.20, 313,830.30 and 76,104.80 is: 114,157.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,220.20 : 313,830.30 = 76,104.80 : x
  2. Step 2: Convert to fraction form
    209,220.20/313,830.30 = 76,104.80/x
  3. Step 3: Cross multiply
    209,220.20x = 313,830.30 × 76,104.80
  4. Step 4: Simplify right side
    209,220.20x = 23,883,992,215.44
  5. Step 5: Solve for x
    x = 23,883,992,215.44/209,220.20
  6. Step 6: Final answer
    x = 114,157.20

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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.