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Finding the Fourth Proportional to 115,663.82, 159,617.31 and 67,917.74

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Solution

The fourth proportional to 115,663.82, 159,617.31 and 67,917.74 is: 93,727.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,663.82 : 159,617.31 = 67,917.74 : x
  2. Step 2: Convert to fraction form
    115,663.82/159,617.31 = 67,917.74/x
  3. Step 3: Cross multiply
    115,663.82x = 159,617.31 × 67,917.74
  4. Step 4: Simplify right side
    115,663.82x = 10,840,846,960.08
  5. Step 5: Solve for x
    x = 10,840,846,960.08/115,663.82
  6. Step 6: Final answer
    x = 93,727.21

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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.