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Finding the Fourth Proportional to 115,163.73, 158,871.65 and 67,387.77

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Solution

The fourth proportional to 115,163.73, 158,871.65 and 67,387.77 is: 92,963.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,163.73 : 158,871.65 = 67,387.77 : x
  2. Step 2: Convert to fraction form
    115,163.73/158,871.65 = 67,387.77/x
  3. Step 3: Cross multiply
    115,163.73x = 158,871.65 × 67,387.77
  4. Step 4: Simplify right side
    115,163.73x = 10,706,005,872.78
  5. Step 5: Solve for x
    x = 10,706,005,872.78/115,163.73
  6. Step 6: Final answer
    x = 92,963.35

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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.