Home / 99,806.91-137,761.34-57,379.11

Finding the Fourth Proportional to 99,806.91, 137,761.34 and 57,379.11

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Solution

The fourth proportional to 99,806.91, 137,761.34 and 57,379.11 is: 79,199.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,806.91 : 137,761.34 = 57,379.11 : x
  2. Step 2: Convert to fraction form
    99,806.91/137,761.34 = 57,379.11/x
  3. Step 3: Cross multiply
    99,806.91x = 137,761.34 × 57,379.11
  4. Step 4: Simplify right side
    99,806.91x = 7,904,622,794.71
  5. Step 5: Solve for x
    x = 7,904,622,794.71/99,806.91
  6. Step 6: Final answer
    x = 79,199.15

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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.