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Finding the Fourth Proportional to 108,773.88, 163,134.24 and 85,022.64

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Solution

The fourth proportional to 108,773.88, 163,134.24 and 85,022.64 is: 127,513.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,773.88 : 163,134.24 = 85,022.64 : x
  2. Step 2: Convert to fraction form
    108,773.88/163,134.24 = 85,022.64/x
  3. Step 3: Cross multiply
    108,773.88x = 163,134.24 × 85,022.64
  4. Step 4: Simplify right side
    108,773.88x = 13,870,103,759.19
  5. Step 5: Solve for x
    x = 13,870,103,759.19/108,773.88
  6. Step 6: Final answer
    x = 127,513.18

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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.