Home / 112,198.78-168,321.12-45,638.38

Finding the Fourth Proportional to 112,198.78, 168,321.12 and 45,638.38

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Solution

The fourth proportional to 112,198.78, 168,321.12 and 45,638.38 is: 68,466.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,198.78 : 168,321.12 = 45,638.38 : x
  2. Step 2: Convert to fraction form
    112,198.78/168,321.12 = 45,638.38/x
  3. Step 3: Cross multiply
    112,198.78x = 168,321.12 × 45,638.38
  4. Step 4: Simplify right side
    112,198.78x = 7,681,903,236.59
  5. Step 5: Solve for x
    x = 7,681,903,236.59/112,198.78
  6. Step 6: Final answer
    x = 68,466.91

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1.5x scale

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.