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Finding the Fourth Proportional to 115,576.77, 159,436.17 and 73,159.91

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Solution

The fourth proportional to 115,576.77, 159,436.17 and 73,159.91 is: 100,922.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,576.77 : 159,436.17 = 73,159.91 : x
  2. Step 2: Convert to fraction form
    115,576.77/159,436.17 = 73,159.91/x
  3. Step 3: Cross multiply
    115,576.77x = 159,436.17 × 73,159.91
  4. Step 4: Simplify right side
    115,576.77x = 11,664,335,847.94
  5. Step 5: Solve for x
    x = 11,664,335,847.94/115,576.77
  6. Step 6: Final answer
    x = 100,922.84

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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.