Home / 109,696.10-164,414.55-81,961.70

Finding the Fourth Proportional to 109,696.10, 164,414.55 and 81,961.70

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Solution

The fourth proportional to 109,696.10, 164,414.55 and 81,961.70 is: 122,845.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,696.10 : 164,414.55 = 81,961.70 : x
  2. Step 2: Convert to fraction form
    109,696.10/164,414.55 = 81,961.70/x
  3. Step 3: Cross multiply
    109,696.10x = 164,414.55 × 81,961.70
  4. Step 4: Simplify right side
    109,696.10x = 13,475,696,022.74
  5. Step 5: Solve for x
    x = 13,475,696,022.74/109,696.10
  6. Step 6: Final answer
    x = 122,845.72

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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.