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Finding the Fourth Proportional to 121,078.98, 181,668.51 and 53,575.62

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Solution

The fourth proportional to 121,078.98, 181,668.51 and 53,575.62 is: 80,385.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,078.98 : 181,668.51 = 53,575.62 : x
  2. Step 2: Convert to fraction form
    121,078.98/181,668.51 = 53,575.62/x
  3. Step 3: Cross multiply
    121,078.98x = 181,668.51 × 53,575.62
  4. Step 4: Simplify right side
    121,078.98x = 9,733,003,057.73
  5. Step 5: Solve for x
    x = 9,733,003,057.73/121,078.98
  6. Step 6: Final answer
    x = 80,385.57

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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.