Home / 209,331.47-313,912.68-81,180.29

Finding the Fourth Proportional to 209,331.47, 313,912.68 and 81,180.29

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Solution

The fourth proportional to 209,331.47, 313,912.68 and 81,180.29 is: 121,737.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,331.47 : 313,912.68 = 81,180.29 : x
  2. Step 2: Convert to fraction form
    209,331.47/313,912.68 = 81,180.29/x
  3. Step 3: Cross multiply
    209,331.47x = 313,912.68 × 81,180.29
  4. Step 4: Simplify right side
    209,331.47x = 25,483,522,877.43
  5. Step 5: Solve for x
    x = 25,483,522,877.43/209,331.47
  6. Step 6: Final answer
    x = 121,737.66

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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.