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Finding the Fourth Proportional to 84,865.86, 127,282.39 and 80,651.03

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Solution

The fourth proportional to 84,865.86, 127,282.39 and 80,651.03 is: 120,960.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,865.86 : 127,282.39 = 80,651.03 : x
  2. Step 2: Convert to fraction form
    84,865.86/127,282.39 = 80,651.03/x
  3. Step 3: Cross multiply
    84,865.86x = 127,282.39 × 80,651.03
  4. Step 4: Simplify right side
    84,865.86x = 10,265,455,016.32
  5. Step 5: Solve for x
    x = 10,265,455,016.32/84,865.86
  6. Step 6: Final answer
    x = 120,960.95

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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.