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Finding the Fourth Proportional to 143,754.84, 198,383.03 and 79,226.43

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Solution

The fourth proportional to 143,754.84, 198,383.03 and 79,226.43 is: 109,333.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,754.84 : 198,383.03 = 79,226.43 : x
  2. Step 2: Convert to fraction form
    143,754.84/198,383.03 = 79,226.43/x
  3. Step 3: Cross multiply
    143,754.84x = 198,383.03 × 79,226.43
  4. Step 4: Simplify right side
    143,754.84x = 15,717,179,239.48
  5. Step 5: Solve for x
    x = 15,717,179,239.48/143,754.84
  6. Step 6: Final answer
    x = 109,333.22

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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.