Home / 198,138.69-273,431.36-113,257.58

Finding the Fourth Proportional to 198,138.69, 273,431.36 and 113,257.58

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Solution

The fourth proportional to 198,138.69, 273,431.36 and 113,257.58 is: 156,295.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,138.69 : 273,431.36 = 113,257.58 : x
  2. Step 2: Convert to fraction form
    198,138.69/273,431.36 = 113,257.58/x
  3. Step 3: Cross multiply
    198,138.69x = 273,431.36 × 113,257.58
  4. Step 4: Simplify right side
    198,138.69x = 30,968,172,762.55
  5. Step 5: Solve for x
    x = 30,968,172,762.55/198,138.69
  6. Step 6: Final answer
    x = 156,295.44

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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.