Home / 209,036.30-313,575.25-66,845.86

Finding the Fourth Proportional to 209,036.30, 313,575.25 and 66,845.86

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Solution

The fourth proportional to 209,036.30, 313,575.25 and 66,845.86 is: 100,275.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,036.30 : 313,575.25 = 66,845.86 : x
  2. Step 2: Convert to fraction form
    209,036.30/313,575.25 = 66,845.86/x
  3. Step 3: Cross multiply
    209,036.30x = 313,575.25 × 66,845.86
  4. Step 4: Simplify right side
    209,036.30x = 20,961,206,435.25
  5. Step 5: Solve for x
    x = 20,961,206,435.25/209,036.30
  6. Step 6: Final answer
    x = 100,275.44

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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.