Home / 100,629.20-150,943.80-71,104.70

Finding the Fourth Proportional to 100,629.20, 150,943.80 and 71,104.70

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Solution

The fourth proportional to 100,629.20, 150,943.80 and 71,104.70 is: 106,657.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,629.20 : 150,943.80 = 71,104.70 : x
  2. Step 2: Convert to fraction form
    100,629.20/150,943.80 = 71,104.70/x
  3. Step 3: Cross multiply
    100,629.20x = 150,943.80 × 71,104.70
  4. Step 4: Simplify right side
    100,629.20x = 10,732,813,615.86
  5. Step 5: Solve for x
    x = 10,732,813,615.86/100,629.20
  6. Step 6: Final answer
    x = 106,657.05

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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.