Home / 126,968.78-175,167.06-81,639.56

Finding the Fourth Proportional to 126,968.78, 175,167.06 and 81,639.56

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Solution

The fourth proportional to 126,968.78, 175,167.06 and 81,639.56 is: 112,630.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,968.78 : 175,167.06 = 81,639.56 : x
  2. Step 2: Convert to fraction form
    126,968.78/175,167.06 = 81,639.56/x
  3. Step 3: Cross multiply
    126,968.78x = 175,167.06 × 81,639.56
  4. Step 4: Simplify right side
    126,968.78x = 14,300,561,704.89
  5. Step 5: Solve for x
    x = 14,300,561,704.89/126,968.78
  6. Step 6: Final answer
    x = 112,630.54

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1.5x scale

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.