Home / 120,781.82-181,129.62-49,683.68

Finding the Fourth Proportional to 120,781.82, 181,129.62 and 49,683.68

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Solution

The fourth proportional to 120,781.82, 181,129.62 and 49,683.68 is: 74,507.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,781.82 : 181,129.62 = 49,683.68 : x
  2. Step 2: Convert to fraction form
    120,781.82/181,129.62 = 49,683.68/x
  3. Step 3: Cross multiply
    120,781.82x = 181,129.62 × 49,683.68
  4. Step 4: Simplify right side
    120,781.82x = 8,999,186,078.60
  5. Step 5: Solve for x
    x = 8,999,186,078.60/120,781.82
  6. Step 6: Final answer
    x = 74,507.79

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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.