Home / 109,809.27-164,896.16-68,518.71

Finding the Fourth Proportional to 109,809.27, 164,896.16 and 68,518.71

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Solution

The fourth proportional to 109,809.27, 164,896.16 and 68,518.71 is: 102,891.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,809.27 : 164,896.16 = 68,518.71 : x
  2. Step 2: Convert to fraction form
    109,809.27/164,896.16 = 68,518.71/x
  3. Step 3: Cross multiply
    109,809.27x = 164,896.16 × 68,518.71
  4. Step 4: Simplify right side
    109,809.27x = 11,298,471,824.56
  5. Step 5: Solve for x
    x = 11,298,471,824.56/109,809.27
  6. Step 6: Final answer
    x = 102,891.79

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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.