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Finding the Fourth Proportional to 121,179.92, 181,609.49 and 92,992.25

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Solution

The fourth proportional to 121,179.92, 181,609.49 and 92,992.25 is: 139,365.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,179.92 : 181,609.49 = 92,992.25 : x
  2. Step 2: Convert to fraction form
    121,179.92/181,609.49 = 92,992.25/x
  3. Step 3: Cross multiply
    121,179.92x = 181,609.49 × 92,992.25
  4. Step 4: Simplify right side
    121,179.92x = 16,888,275,782.96
  5. Step 5: Solve for x
    x = 16,888,275,782.96/121,179.92
  6. Step 6: Final answer
    x = 139,365.30

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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.