Home / 109,756.20-164,634.30-80,231.70

Finding the Fourth Proportional to 109,756.20, 164,634.30 and 80,231.70

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Solution

The fourth proportional to 109,756.20, 164,634.30 and 80,231.70 is: 120,347.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,756.20 : 164,634.30 = 80,231.70 : x
  2. Step 2: Convert to fraction form
    109,756.20/164,634.30 = 80,231.70/x
  3. Step 3: Cross multiply
    109,756.20x = 164,634.30 × 80,231.70
  4. Step 4: Simplify right side
    109,756.20x = 13,208,889,767.31
  5. Step 5: Solve for x
    x = 13,208,889,767.31/109,756.20
  6. Step 6: Final answer
    x = 120,347.55

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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.