Home / 100,600.20-150,900.30-77,272.20

Finding the Fourth Proportional to 100,600.20, 150,900.30 and 77,272.20

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Solution

The fourth proportional to 100,600.20, 150,900.30 and 77,272.20 is: 115,908.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,600.20 : 150,900.30 = 77,272.20 : x
  2. Step 2: Convert to fraction form
    100,600.20/150,900.30 = 77,272.20/x
  3. Step 3: Cross multiply
    100,600.20x = 150,900.30 × 77,272.20
  4. Step 4: Simplify right side
    100,600.20x = 11,660,398,161.66
  5. Step 5: Solve for x
    x = 11,660,398,161.66/100,600.20
  6. Step 6: Final answer
    x = 115,908.30

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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.