Home / 100,855.38-139,179.30-55,532.46

Finding the Fourth Proportional to 100,855.38, 139,179.30 and 55,532.46

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Solution

The fourth proportional to 100,855.38, 139,179.30 and 55,532.46 is: 76,634.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,855.38 : 139,179.30 = 55,532.46 : x
  2. Step 2: Convert to fraction form
    100,855.38/139,179.30 = 55,532.46/x
  3. Step 3: Cross multiply
    100,855.38x = 139,179.30 × 55,532.46
  4. Step 4: Simplify right side
    100,855.38x = 7,728,968,910.08
  5. Step 5: Solve for x
    x = 7,728,968,910.08/100,855.38
  6. Step 6: Final answer
    x = 76,634.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.