Home / 107,819.80-161,729.70-79,826.20

Finding the Fourth Proportional to 107,819.80, 161,729.70 and 79,826.20

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Solution

The fourth proportional to 107,819.80, 161,729.70 and 79,826.20 is: 119,739.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,819.80 : 161,729.70 = 79,826.20 : x
  2. Step 2: Convert to fraction form
    107,819.80/161,729.70 = 79,826.20/x
  3. Step 3: Cross multiply
    107,819.80x = 161,729.70 × 79,826.20
  4. Step 4: Simplify right side
    107,819.80x = 12,910,267,378.14
  5. Step 5: Solve for x
    x = 12,910,267,378.14/107,819.80
  6. Step 6: Final answer
    x = 119,739.30

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1.5x scale

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.