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Finding the Fourth Proportional to 143,859.75, 198,545.70 and 82,630.03

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Solution

The fourth proportional to 143,859.75, 198,545.70 and 82,630.03 is: 114,040.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,859.75 : 198,545.70 = 82,630.03 : x
  2. Step 2: Convert to fraction form
    143,859.75/198,545.70 = 82,630.03/x
  3. Step 3: Cross multiply
    143,859.75x = 198,545.70 × 82,630.03
  4. Step 4: Simplify right side
    143,859.75x = 16,405,837,147.37
  5. Step 5: Solve for x
    x = 16,405,837,147.37/143,859.75
  6. Step 6: Final answer
    x = 114,040.50

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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.