Home / 126,967.78-175,165.68-81,638.56

Finding the Fourth Proportional to 126,967.78, 175,165.68 and 81,638.56

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Solution

The fourth proportional to 126,967.78, 175,165.68 and 81,638.56 is: 112,629.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,967.78 : 175,165.68 = 81,638.56 : x
  2. Step 2: Convert to fraction form
    126,967.78/175,165.68 = 81,638.56/x
  3. Step 3: Cross multiply
    126,967.78x = 175,165.68 × 81,638.56
  4. Step 4: Simplify right side
    126,967.78x = 14,300,273,876.62
  5. Step 5: Solve for x
    x = 14,300,273,876.62/126,967.78
  6. Step 6: Final answer
    x = 112,629.16

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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.