Home / 126,230.54-189,201.83-78,867.41

Finding the Fourth Proportional to 126,230.54, 189,201.83 and 78,867.41

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Solution

The fourth proportional to 126,230.54, 189,201.83 and 78,867.41 is: 118,211.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,230.54 : 189,201.83 = 78,867.41 : x
  2. Step 2: Convert to fraction form
    126,230.54/189,201.83 = 78,867.41/x
  3. Step 3: Cross multiply
    126,230.54x = 189,201.83 × 78,867.41
  4. Step 4: Simplify right side
    126,230.54x = 14,921,857,629.19
  5. Step 5: Solve for x
    x = 14,921,857,629.19/126,230.54
  6. Step 6: Final answer
    x = 118,211.15

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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.