Home / 109,726.20-164,589.30-80,201.70

Finding the Fourth Proportional to 109,726.20, 164,589.30 and 80,201.70

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Solution

The fourth proportional to 109,726.20, 164,589.30 and 80,201.70 is: 120,302.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,726.20 : 164,589.30 = 80,201.70 : x
  2. Step 2: Convert to fraction form
    109,726.20/164,589.30 = 80,201.70/x
  3. Step 3: Cross multiply
    109,726.20x = 164,589.30 × 80,201.70
  4. Step 4: Simplify right side
    109,726.20x = 13,200,341,661.81
  5. Step 5: Solve for x
    x = 13,200,341,661.81/109,726.20
  6. Step 6: Final answer
    x = 120,302.55

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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.