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Finding the Fourth Proportional to 109,382.40, 164,073.60 and 92,979.90

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Solution

The fourth proportional to 109,382.40, 164,073.60 and 92,979.90 is: 139,469.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,382.40 : 164,073.60 = 92,979.90 : x
  2. Step 2: Convert to fraction form
    109,382.40/164,073.60 = 92,979.90/x
  3. Step 3: Cross multiply
    109,382.40x = 164,073.60 × 92,979.90
  4. Step 4: Simplify right side
    109,382.40x = 15,255,546,920.64
  5. Step 5: Solve for x
    x = 15,255,546,920.64/109,382.40
  6. Step 6: Final answer
    x = 139,469.85

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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.