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Finding the Fourth Proportional to 117,231.71, 161,779.68 and 63,517.77

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Solution

The fourth proportional to 117,231.71, 161,779.68 and 63,517.77 is: 87,654.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,231.71 : 161,779.68 = 63,517.77 : x
  2. Step 2: Convert to fraction form
    117,231.71/161,779.68 = 63,517.77/x
  3. Step 3: Cross multiply
    117,231.71x = 161,779.68 × 63,517.77
  4. Step 4: Simplify right side
    117,231.71x = 10,275,884,504.91
  5. Step 5: Solve for x
    x = 10,275,884,504.91/117,231.71
  6. Step 6: Final answer
    x = 87,654.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.