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Finding the Fourth Proportional to 117,166.75, 161,689.31 and 63,450.54

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Solution

The fourth proportional to 117,166.75, 161,689.31 and 63,450.54 is: 87,561.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,166.75 : 161,689.31 = 63,450.54 : x
  2. Step 2: Convert to fraction form
    117,166.75/161,689.31 = 63,450.54/x
  3. Step 3: Cross multiply
    117,166.75x = 161,689.31 × 63,450.54
  4. Step 4: Simplify right side
    117,166.75x = 10,259,274,309.32
  5. Step 5: Solve for x
    x = 10,259,274,309.32/117,166.75
  6. Step 6: Final answer
    x = 87,561.31

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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.