Home / 100,216.20-150,324.30-77,908.80

Finding the Fourth Proportional to 100,216.20, 150,324.30 and 77,908.80

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Solution

The fourth proportional to 100,216.20, 150,324.30 and 77,908.80 is: 116,863.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,216.20 : 150,324.30 = 77,908.80 : x
  2. Step 2: Convert to fraction form
    100,216.20/150,324.30 = 77,908.80/x
  3. Step 3: Cross multiply
    100,216.20x = 150,324.30 × 77,908.80
  4. Step 4: Simplify right side
    100,216.20x = 11,711,585,823.84
  5. Step 5: Solve for x
    x = 11,711,585,823.84/100,216.20
  6. Step 6: Final answer
    x = 116,863.20

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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.