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Finding the Fourth Proportional to 108,843.20, 163,135.20 and 45,663.20

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Solution

The fourth proportional to 108,843.20, 163,135.20 and 45,663.20 is: 68,440.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,843.20 : 163,135.20 = 45,663.20 : x
  2. Step 2: Convert to fraction form
    108,843.20/163,135.20 = 45,663.20/x
  3. Step 3: Cross multiply
    108,843.20x = 163,135.20 × 45,663.20
  4. Step 4: Simplify right side
    108,843.20x = 7,449,275,264.64
  5. Step 5: Solve for x
    x = 7,449,275,264.64/108,843.20
  6. Step 6: Final answer
    x = 68,440.43

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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.