Home / 221,103.45-331,720.25-71,340.93

Finding the Fourth Proportional to 221,103.45, 331,720.25 and 71,340.93

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Solution

The fourth proportional to 221,103.45, 331,720.25 and 71,340.93 is: 107,032.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,103.45 : 331,720.25 = 71,340.93 : x
  2. Step 2: Convert to fraction form
    221,103.45/331,720.25 = 71,340.93/x
  3. Step 3: Cross multiply
    221,103.45x = 331,720.25 × 71,340.93
  4. Step 4: Simplify right side
    221,103.45x = 23,665,230,778.13
  5. Step 5: Solve for x
    x = 23,665,230,778.13/221,103.45
  6. Step 6: Final answer
    x = 107,032.39

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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.