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Finding the Fourth Proportional to 108,843.15, 163,201.87 and 42,205.43

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Solution

The fourth proportional to 108,843.15, 163,201.87 and 42,205.43 is: 63,283.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,843.15 : 163,201.87 = 42,205.43 : x
  2. Step 2: Convert to fraction form
    108,843.15/163,201.87 = 42,205.43/x
  3. Step 3: Cross multiply
    108,843.15x = 163,201.87 × 42,205.43
  4. Step 4: Simplify right side
    108,843.15x = 6,888,005,402.65
  5. Step 5: Solve for x
    x = 6,888,005,402.65/108,843.15
  6. Step 6: Final answer
    x = 63,283.77

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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.