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Finding the Fourth Proportional to 108,739.80, 163,114.56 and 56,251.80

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Solution

The fourth proportional to 108,739.80, 163,114.56 and 56,251.80 is: 84,380.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,739.80 : 163,114.56 = 56,251.80 : x
  2. Step 2: Convert to fraction form
    108,739.80/163,114.56 = 56,251.80/x
  3. Step 3: Cross multiply
    108,739.80x = 163,114.56 × 56,251.80
  4. Step 4: Simplify right side
    108,739.80x = 9,175,487,606.21
  5. Step 5: Solve for x
    x = 9,175,487,606.21/108,739.80
  6. Step 6: Final answer
    x = 84,380.21

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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.