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Finding the Fourth Proportional to 143,419.55, 197,910.84 and 79,755.98

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Solution

The fourth proportional to 143,419.55, 197,910.84 and 79,755.98 is: 110,058.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,419.55 : 197,910.84 = 79,755.98 : x
  2. Step 2: Convert to fraction form
    143,419.55/197,910.84 = 79,755.98/x
  3. Step 3: Cross multiply
    143,419.55x = 197,910.84 × 79,755.98
  4. Step 4: Simplify right side
    143,419.55x = 15,784,572,306.35
  5. Step 5: Solve for x
    x = 15,784,572,306.35/143,419.55
  6. Step 6: Final answer
    x = 110,058.73

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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.