Home / 109,879.92-164,649.38-76,211.69

Finding the Fourth Proportional to 109,879.92, 164,649.38 and 76,211.69

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Solution

The fourth proportional to 109,879.92, 164,649.38 and 76,211.69 is: 114,199.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,879.92 : 164,649.38 = 76,211.69 : x
  2. Step 2: Convert to fraction form
    109,879.92/164,649.38 = 76,211.69/x
  3. Step 3: Cross multiply
    109,879.92x = 164,649.38 × 76,211.69
  4. Step 4: Simplify right side
    109,879.92x = 12,548,206,302.95
  5. Step 5: Solve for x
    x = 12,548,206,302.95/109,879.92
  6. Step 6: Final answer
    x = 114,199.27

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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.