Home / 208,984.95-313,378.61-80,961.21

Finding the Fourth Proportional to 208,984.95, 313,378.61 and 80,961.21

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Solution

The fourth proportional to 208,984.95, 313,378.61 and 80,961.21 is: 121,403.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,984.95 : 313,378.61 = 80,961.21 : x
  2. Step 2: Convert to fraction form
    208,984.95/313,378.61 = 80,961.21/x
  3. Step 3: Cross multiply
    208,984.95x = 313,378.61 × 80,961.21
  4. Step 4: Simplify right side
    208,984.95x = 25,371,511,048.91
  5. Step 5: Solve for x
    x = 25,371,511,048.91/208,984.95
  6. Step 6: Final answer
    x = 121,403.53

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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.