Home / 208,901.21-313,352.33-75,781.60

Finding the Fourth Proportional to 208,901.21, 313,352.33 and 75,781.60

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Solution

The fourth proportional to 208,901.21, 313,352.33 and 75,781.60 is: 113,672.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,901.21 : 313,352.33 = 75,781.60 : x
  2. Step 2: Convert to fraction form
    208,901.21/313,352.33 = 75,781.60/x
  3. Step 3: Cross multiply
    208,901.21x = 313,352.33 × 75,781.60
  4. Step 4: Simplify right side
    208,901.21x = 23,746,341,396.12
  5. Step 5: Solve for x
    x = 23,746,341,396.12/208,901.21
  6. Step 6: Final answer
    x = 113,672.59

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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.