Home / 126,989.82-175,175.19-117,979.38

Finding the Fourth Proportional to 126,989.82, 175,175.19 and 117,979.38

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Solution

The fourth proportional to 126,989.82, 175,175.19 and 117,979.38 is: 162,745.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,989.82 : 175,175.19 = 117,979.38 : x
  2. Step 2: Convert to fraction form
    126,989.82/175,175.19 = 117,979.38/x
  3. Step 3: Cross multiply
    126,989.82x = 175,175.19 × 117,979.38
  4. Step 4: Simplify right side
    126,989.82x = 20,667,060,307.58
  5. Step 5: Solve for x
    x = 20,667,060,307.58/126,989.82
  6. Step 6: Final answer
    x = 162,745.80

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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.