Home / 149,902.92-206,866.71-81,919.76

Finding the Fourth Proportional to 149,902.92, 206,866.71 and 81,919.76

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Solution

The fourth proportional to 149,902.92, 206,866.71 and 81,919.76 is: 113,049.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,902.92 : 206,866.71 = 81,919.76 : x
  2. Step 2: Convert to fraction form
    149,902.92/206,866.71 = 81,919.76/x
  3. Step 3: Cross multiply
    149,902.92x = 206,866.71 × 81,919.76
  4. Step 4: Simplify right side
    149,902.92x = 16,946,470,200.86
  5. Step 5: Solve for x
    x = 16,946,470,200.86/149,902.92
  6. Step 6: Final answer
    x = 113,049.63

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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.