Home / 209,120.98-313,505.14-90,703.14

Finding the Fourth Proportional to 209,120.98, 313,505.14 and 90,703.14

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Solution

The fourth proportional to 209,120.98, 313,505.14 and 90,703.14 is: 135,978.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,120.98 : 313,505.14 = 90,703.14 : x
  2. Step 2: Convert to fraction form
    209,120.98/313,505.14 = 90,703.14/x
  3. Step 3: Cross multiply
    209,120.98x = 313,505.14 × 90,703.14
  4. Step 4: Simplify right side
    209,120.98x = 28,435,900,604.14
  5. Step 5: Solve for x
    x = 28,435,900,604.14/209,120.98
  6. Step 6: Final answer
    x = 135,978.23

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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.