Home / 142,921.71-197,217.74-82,511.85

Finding the Fourth Proportional to 142,921.71, 197,217.74 and 82,511.85

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Solution

The fourth proportional to 142,921.71, 197,217.74 and 82,511.85 is: 113,858.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,921.71 : 197,217.74 = 82,511.85 : x
  2. Step 2: Convert to fraction form
    142,921.71/197,217.74 = 82,511.85/x
  3. Step 3: Cross multiply
    142,921.71x = 197,217.74 × 82,511.85
  4. Step 4: Simplify right side
    142,921.71x = 16,272,800,167.66
  5. Step 5: Solve for x
    x = 16,272,800,167.66/142,921.71
  6. Step 6: Final answer
    x = 113,858.14

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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.