Home / 209,849.41-314,819.09-67,702.78

Finding the Fourth Proportional to 209,849.41, 314,819.09 and 67,702.78

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Solution

The fourth proportional to 209,849.41, 314,819.09 and 67,702.78 is: 101,568.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,849.41 : 314,819.09 = 67,702.78 : x
  2. Step 2: Convert to fraction form
    209,849.41/314,819.09 = 67,702.78/x
  3. Step 3: Cross multiply
    209,849.41x = 314,819.09 × 67,702.78
  4. Step 4: Simplify right side
    209,849.41x = 21,314,127,590.07
  5. Step 5: Solve for x
    x = 21,314,127,590.07/209,849.41
  6. Step 6: Final answer
    x = 101,568.68

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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.