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Finding the Fourth Proportional to 101,179.78, 139,498.30 and 82,963.39

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Solution

The fourth proportional to 101,179.78, 139,498.30 and 82,963.39 is: 114,383.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,179.78 : 139,498.30 = 82,963.39 : x
  2. Step 2: Convert to fraction form
    101,179.78/139,498.30 = 82,963.39/x
  3. Step 3: Cross multiply
    101,179.78x = 139,498.30 × 82,963.39
  4. Step 4: Simplify right side
    101,179.78x = 11,573,251,155.53
  5. Step 5: Solve for x
    x = 11,573,251,155.53/101,179.78
  6. Step 6: Final answer
    x = 114,383.04

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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.