Home / 221,821.50-306,091.73-135,804.73

Finding the Fourth Proportional to 221,821.50, 306,091.73 and 135,804.73

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Solution

The fourth proportional to 221,821.50, 306,091.73 and 135,804.73 is: 187,397.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,821.50 : 306,091.73 = 135,804.73 : x
  2. Step 2: Convert to fraction form
    221,821.50/306,091.73 = 135,804.73/x
  3. Step 3: Cross multiply
    221,821.50x = 306,091.73 × 135,804.73
  4. Step 4: Simplify right side
    221,821.50x = 41,568,704,747.88
  5. Step 5: Solve for x
    x = 41,568,704,747.88/221,821.50
  6. Step 6: Final answer
    x = 187,397.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.