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Finding the Fourth Proportional to 108,745.94, 163,036.84 and 71,315.44

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Solution

The fourth proportional to 108,745.94, 163,036.84 and 71,315.44 is: 106,919.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,745.94 : 163,036.84 = 71,315.44 : x
  2. Step 2: Convert to fraction form
    108,745.94/163,036.84 = 71,315.44/x
  3. Step 3: Cross multiply
    108,745.94x = 163,036.84 × 71,315.44
  4. Step 4: Simplify right side
    108,745.94x = 11,627,043,394.93
  5. Step 5: Solve for x
    x = 11,627,043,394.93/108,745.94
  6. Step 6: Final answer
    x = 106,919.33

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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.