Home / 126,504.74-189,788.25-89,137.78

Finding the Fourth Proportional to 126,504.74, 189,788.25 and 89,137.78

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Solution

The fourth proportional to 126,504.74, 189,788.25 and 89,137.78 is: 133,728.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,504.74 : 189,788.25 = 89,137.78 : x
  2. Step 2: Convert to fraction form
    126,504.74/189,788.25 = 89,137.78/x
  3. Step 3: Cross multiply
    126,504.74x = 189,788.25 × 89,137.78
  4. Step 4: Simplify right side
    126,504.74x = 16,917,303,701.04
  5. Step 5: Solve for x
    x = 16,917,303,701.04/126,504.74
  6. Step 6: Final answer
    x = 133,728.62

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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.