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Finding the Fourth Proportional to 143,955.66, 198,663.10 and 80,292.09

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Solution

The fourth proportional to 143,955.66, 198,663.10 and 80,292.09 is: 110,805.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,955.66 : 198,663.10 = 80,292.09 : x
  2. Step 2: Convert to fraction form
    143,955.66/198,663.10 = 80,292.09/x
  3. Step 3: Cross multiply
    143,955.66x = 198,663.10 × 80,292.09
  4. Step 4: Simplify right side
    143,955.66x = 15,951,076,049.14
  5. Step 5: Solve for x
    x = 15,951,076,049.14/143,955.66
  6. Step 6: Final answer
    x = 110,805.48

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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.