Home / 126,901.08-175,044.20-81,638

Finding the Fourth Proportional to 126,901.08, 175,044.20 and 81,638

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Solution

The fourth proportional to 126,901.08, 175,044.20 and 81,638 is: 112,609.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,901.08 : 175,044.20 = 81,638 : x
  2. Step 2: Convert to fraction form
    126,901.08/175,044.20 = 81,638/x
  3. Step 3: Cross multiply
    126,901.08x = 175,044.20 × 81,638
  4. Step 4: Simplify right side
    126,901.08x = 14,290,258,399.60
  5. Step 5: Solve for x
    x = 14,290,258,399.60/126,901.08
  6. Step 6: Final answer
    x = 112,609.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.