Home / 209,107.20-313,660.80-51,333.60

Finding the Fourth Proportional to 209,107.20, 313,660.80 and 51,333.60

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Solution

The fourth proportional to 209,107.20, 313,660.80 and 51,333.60 is: 77,000.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,107.20 : 313,660.80 = 51,333.60 : x
  2. Step 2: Convert to fraction form
    209,107.20/313,660.80 = 51,333.60/x
  3. Step 3: Cross multiply
    209,107.20x = 313,660.80 × 51,333.60
  4. Step 4: Simplify right side
    209,107.20x = 16,101,338,042.88
  5. Step 5: Solve for x
    x = 16,101,338,042.88/209,107.20
  6. Step 6: Final answer
    x = 77,000.40

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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.