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Finding the Fourth Proportional to 144,650.49, 199,615.44 and 80,990.56

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Solution

The fourth proportional to 144,650.49, 199,615.44 and 80,990.56 is: 111,765.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,650.49 : 199,615.44 = 80,990.56 : x
  2. Step 2: Convert to fraction form
    144,650.49/199,615.44 = 80,990.56/x
  3. Step 3: Cross multiply
    144,650.49x = 199,615.44 × 80,990.56
  4. Step 4: Simplify right side
    144,650.49x = 16,166,966,270.25
  5. Step 5: Solve for x
    x = 16,166,966,270.25/144,650.49
  6. Step 6: Final answer
    x = 111,765.72

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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.