Home / 126,504.71-189,788.20-89,137.75

Finding the Fourth Proportional to 126,504.71, 189,788.20 and 89,137.75

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Solution

The fourth proportional to 126,504.71, 189,788.20 and 89,137.75 is: 133,728.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,504.71 : 189,788.20 = 89,137.75 : x
  2. Step 2: Convert to fraction form
    126,504.71/189,788.20 = 89,137.75/x
  3. Step 3: Cross multiply
    126,504.71x = 189,788.20 × 89,137.75
  4. Step 4: Simplify right side
    126,504.71x = 16,917,293,124.55
  5. Step 5: Solve for x
    x = 16,917,293,124.55/126,504.71
  6. Step 6: Final answer
    x = 133,728.56

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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.