Home / 149,894.27-206,853.66-81,911.67

Finding the Fourth Proportional to 149,894.27, 206,853.66 and 81,911.67

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Solution

The fourth proportional to 149,894.27, 206,853.66 and 81,911.67 is: 113,037.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,894.27 : 206,853.66 = 81,911.67 : x
  2. Step 2: Convert to fraction form
    149,894.27/206,853.66 = 81,911.67/x
  3. Step 3: Cross multiply
    149,894.27x = 206,853.66 × 81,911.67
  4. Step 4: Simplify right side
    149,894.27x = 16,943,728,736.21
  5. Step 5: Solve for x
    x = 16,943,728,736.21/149,894.27
  6. Step 6: Final answer
    x = 113,037.87

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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.