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Finding the Fourth Proportional to 120,332.52, 166,052.30 and 71,935.43

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Solution

The fourth proportional to 120,332.52, 166,052.30 and 71,935.43 is: 99,266.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,332.52 : 166,052.30 = 71,935.43 : x
  2. Step 2: Convert to fraction form
    120,332.52/166,052.30 = 71,935.43/x
  3. Step 3: Cross multiply
    120,332.52x = 166,052.30 × 71,935.43
  4. Step 4: Simplify right side
    120,332.52x = 11,945,042,413.05
  5. Step 5: Solve for x
    x = 11,945,042,413.05/120,332.52
  6. Step 6: Final answer
    x = 99,266.95

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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.