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Finding the Fourth Proportional to 144,663.49, 199,617.64 and 80,991.01

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Solution

The fourth proportional to 144,663.49, 199,617.64 and 80,991.01 is: 111,757.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,663.49 : 199,617.64 = 80,991.01 : x
  2. Step 2: Convert to fraction form
    144,663.49/199,617.64 = 80,991.01/x
  3. Step 3: Cross multiply
    144,663.49x = 199,617.64 × 80,991.01
  4. Step 4: Simplify right side
    144,663.49x = 16,167,234,277.42
  5. Step 5: Solve for x
    x = 16,167,234,277.42/144,663.49
  6. Step 6: Final answer
    x = 111,757.53

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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.