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Finding the Fourth Proportional to 223,421.85, 335,027.48 and 81,166.80

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Solution

The fourth proportional to 223,421.85, 335,027.48 and 81,166.80 is: 121,711.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,421.85 : 335,027.48 = 81,166.80 : x
  2. Step 2: Convert to fraction form
    223,421.85/335,027.48 = 81,166.80/x
  3. Step 3: Cross multiply
    223,421.85x = 335,027.48 × 81,166.80
  4. Step 4: Simplify right side
    223,421.85x = 27,193,108,057.83
  5. Step 5: Solve for x
    x = 27,193,108,057.83/223,421.85
  6. Step 6: Final answer
    x = 121,711.95

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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.