Home / 120,780.82-181,128.12-49,682.68

Finding the Fourth Proportional to 120,780.82, 181,128.12 and 49,682.68

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Solution

The fourth proportional to 120,780.82, 181,128.12 and 49,682.68 is: 74,506.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,780.82 : 181,128.12 = 49,682.68 : x
  2. Step 2: Convert to fraction form
    120,780.82/181,128.12 = 49,682.68/x
  3. Step 3: Cross multiply
    120,780.82x = 181,128.12 × 49,682.68
  4. Step 4: Simplify right side
    120,780.82x = 8,998,930,424.96
  5. Step 5: Solve for x
    x = 8,998,930,424.96/120,780.82
  6. Step 6: Final answer
    x = 74,506.29

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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.