Home / 221,426.20-332,139.30-81,166.60

Finding the Fourth Proportional to 221,426.20, 332,139.30 and 81,166.60

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Solution

The fourth proportional to 221,426.20, 332,139.30 and 81,166.60 is: 121,749.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,426.20 : 332,139.30 = 81,166.60 : x
  2. Step 2: Convert to fraction form
    221,426.20/332,139.30 = 81,166.60/x
  3. Step 3: Cross multiply
    221,426.20x = 332,139.30 × 81,166.60
  4. Step 4: Simplify right side
    221,426.20x = 26,958,617,707.38
  5. Step 5: Solve for x
    x = 26,958,617,707.38/221,426.20
  6. Step 6: Final answer
    x = 121,749.90

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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.