Home / 117,171.30-161,699.35-71,874.26

Finding the Fourth Proportional to 117,171.30, 161,699.35 and 71,874.26

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Solution

The fourth proportional to 117,171.30, 161,699.35 and 71,874.26 is: 99,188.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,171.30 : 161,699.35 = 71,874.26 : x
  2. Step 2: Convert to fraction form
    117,171.30/161,699.35 = 71,874.26/x
  3. Step 3: Cross multiply
    117,171.30x = 161,699.35 × 71,874.26
  4. Step 4: Simplify right side
    117,171.30x = 11,622,021,123.73
  5. Step 5: Solve for x
    x = 11,622,021,123.73/117,171.30
  6. Step 6: Final answer
    x = 99,188.29

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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.