Home / 142,921.46-197,217.39-82,511.60

Finding the Fourth Proportional to 142,921.46, 197,217.39 and 82,511.60

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Solution

The fourth proportional to 142,921.46, 197,217.39 and 82,511.60 is: 113,857.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,921.46 : 197,217.39 = 82,511.60 : x
  2. Step 2: Convert to fraction form
    142,921.46/197,217.39 = 82,511.60/x
  3. Step 3: Cross multiply
    142,921.46x = 197,217.39 × 82,511.60
  4. Step 4: Simplify right side
    142,921.46x = 16,272,722,396.72
  5. Step 5: Solve for x
    x = 16,272,722,396.72/142,921.46
  6. Step 6: Final answer
    x = 113,857.80

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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.