Home / 209,115.69-313,680.36-99,546.85

Finding the Fourth Proportional to 209,115.69, 313,680.36 and 99,546.85

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Solution

The fourth proportional to 209,115.69, 313,680.36 and 99,546.85 is: 149,323.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,115.69 : 313,680.36 = 99,546.85 : x
  2. Step 2: Convert to fraction form
    209,115.69/313,680.36 = 99,546.85/x
  3. Step 3: Cross multiply
    209,115.69x = 313,680.36 × 99,546.85
  4. Step 4: Simplify right side
    209,115.69x = 31,225,889,678.73
  5. Step 5: Solve for x
    x = 31,225,889,678.73/209,115.69
  6. Step 6: Final answer
    x = 149,323.51

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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.