Home / 126,489.66-189,734.49-47,621.58

Finding the Fourth Proportional to 126,489.66, 189,734.49 and 47,621.58

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Solution

The fourth proportional to 126,489.66, 189,734.49 and 47,621.58 is: 71,432.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,489.66 : 189,734.49 = 47,621.58 : x
  2. Step 2: Convert to fraction form
    126,489.66/189,734.49 = 47,621.58/x
  3. Step 3: Cross multiply
    126,489.66x = 189,734.49 × 47,621.58
  4. Step 4: Simplify right side
    126,489.66x = 9,035,456,847.21
  5. Step 5: Solve for x
    x = 9,035,456,847.21/126,489.66
  6. Step 6: Final answer
    x = 71,432.37

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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.