Home / 109,723.70-164,585.55-80,199.20

Finding the Fourth Proportional to 109,723.70, 164,585.55 and 80,199.20

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Solution

The fourth proportional to 109,723.70, 164,585.55 and 80,199.20 is: 120,298.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,723.70 : 164,585.55 = 80,199.20 : x
  2. Step 2: Convert to fraction form
    109,723.70/164,585.55 = 80,199.20/x
  3. Step 3: Cross multiply
    109,723.70x = 164,585.55 × 80,199.20
  4. Step 4: Simplify right side
    109,723.70x = 13,199,629,441.56
  5. Step 5: Solve for x
    x = 13,199,629,441.56/109,723.70
  6. Step 6: Final answer
    x = 120,298.80

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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.