Home / 209,290.03-313,927.99-90,961.38

Finding the Fourth Proportional to 209,290.03, 313,927.99 and 90,961.38

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Solution

The fourth proportional to 209,290.03, 313,927.99 and 90,961.38 is: 136,439.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,290.03 : 313,927.99 = 90,961.38 : x
  2. Step 2: Convert to fraction form
    209,290.03/313,927.99 = 90,961.38/x
  3. Step 3: Cross multiply
    209,290.03x = 313,927.99 × 90,961.38
  4. Step 4: Simplify right side
    209,290.03x = 28,555,322,963.62
  5. Step 5: Solve for x
    x = 28,555,322,963.62/209,290.03
  6. Step 6: Final answer
    x = 136,439.00

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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.