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Finding the Fourth Proportional to 143,396.82, 197,887.05 and 79,734.96

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Solution

The fourth proportional to 143,396.82, 197,887.05 and 79,734.96 is: 110,033.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,396.82 : 197,887.05 = 79,734.96 : x
  2. Step 2: Convert to fraction form
    143,396.82/197,887.05 = 79,734.96/x
  3. Step 3: Cross multiply
    143,396.82x = 197,887.05 × 79,734.96
  4. Step 4: Simplify right side
    143,396.82x = 15,778,516,016.27
  5. Step 5: Solve for x
    x = 15,778,516,016.27/143,396.82
  6. Step 6: Final answer
    x = 110,033.93

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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.