Home / 109,678.20-164,517.30-68,206.20

Finding the Fourth Proportional to 109,678.20, 164,517.30 and 68,206.20

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Solution

The fourth proportional to 109,678.20, 164,517.30 and 68,206.20 is: 102,309.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,678.20 : 164,517.30 = 68,206.20 : x
  2. Step 2: Convert to fraction form
    109,678.20/164,517.30 = 68,206.20/x
  3. Step 3: Cross multiply
    109,678.20x = 164,517.30 × 68,206.20
  4. Step 4: Simplify right side
    109,678.20x = 11,221,099,867.26
  5. Step 5: Solve for x
    x = 11,221,099,867.26/109,678.20
  6. Step 6: Final answer
    x = 102,309.30

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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.