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Finding the Fourth Proportional to 144,517.08, 199,437.12 and 80,859

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Solution

The fourth proportional to 144,517.08, 199,437.12 and 80,859 is: 111,587.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,517.08 : 199,437.12 = 80,859 : x
  2. Step 2: Convert to fraction form
    144,517.08/199,437.12 = 80,859/x
  3. Step 3: Cross multiply
    144,517.08x = 199,437.12 × 80,859
  4. Step 4: Simplify right side
    144,517.08x = 16,126,286,086.08
  5. Step 5: Solve for x
    x = 16,126,286,086.08/144,517.08
  6. Step 6: Final answer
    x = 111,587.41

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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.