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Finding the Fourth Proportional to 117,310.96, 161,859.72 and 69,562

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Solution

The fourth proportional to 117,310.96, 161,859.72 and 69,562 is: 95,978.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,310.96 : 161,859.72 = 69,562 : x
  2. Step 2: Convert to fraction form
    117,310.96/161,859.72 = 69,562/x
  3. Step 3: Cross multiply
    117,310.96x = 161,859.72 × 69,562
  4. Step 4: Simplify right side
    117,310.96x = 11,259,285,842.64
  5. Step 5: Solve for x
    x = 11,259,285,842.64/117,310.96
  6. Step 6: Final answer
    x = 95,978.12

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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.