Home / 221,690.20-305,930.50-121,086.04

Finding the Fourth Proportional to 221,690.20, 305,930.50 and 121,086.04

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Solution

The fourth proportional to 221,690.20, 305,930.50 and 121,086.04 is: 167,097.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,690.20 : 305,930.50 = 121,086.04 : x
  2. Step 2: Convert to fraction form
    221,690.20/305,930.50 = 121,086.04/x
  3. Step 3: Cross multiply
    221,690.20x = 305,930.50 × 121,086.04
  4. Step 4: Simplify right side
    221,690.20x = 37,043,912,760.22
  5. Step 5: Solve for x
    x = 37,043,912,760.22/221,690.20
  6. Step 6: Final answer
    x = 167,097.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.