Home / 109,610.20-164,415.30-80,085.70

Finding the Fourth Proportional to 109,610.20, 164,415.30 and 80,085.70

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Solution

The fourth proportional to 109,610.20, 164,415.30 and 80,085.70 is: 120,128.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,610.20 : 164,415.30 = 80,085.70 : x
  2. Step 2: Convert to fraction form
    109,610.20/164,415.30 = 80,085.70/x
  3. Step 3: Cross multiply
    109,610.20x = 164,415.30 × 80,085.70
  4. Step 4: Simplify right side
    109,610.20x = 13,167,314,391.21
  5. Step 5: Solve for x
    x = 13,167,314,391.21/109,610.20
  6. Step 6: Final answer
    x = 120,128.55

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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.