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Finding the Fourth Proportional to 127,855.60, 192,013.80 and 123,708.40

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Solution

The fourth proportional to 127,855.60, 192,013.80 and 123,708.40 is: 185,785.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,855.60 : 192,013.80 = 123,708.40 : x
  2. Step 2: Convert to fraction form
    127,855.60/192,013.80 = 123,708.40/x
  3. Step 3: Cross multiply
    127,855.60x = 192,013.80 × 123,708.40
  4. Step 4: Simplify right side
    127,855.60x = 23,753,719,975.92
  5. Step 5: Solve for x
    x = 23,753,719,975.92/127,855.60
  6. Step 6: Final answer
    x = 185,785.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.