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Finding the Fourth Proportional to 143,760.67, 198,389.90 and 83,366.41

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Solution

The fourth proportional to 143,760.67, 198,389.90 and 83,366.41 is: 115,045.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,760.67 : 198,389.90 = 83,366.41 : x
  2. Step 2: Convert to fraction form
    143,760.67/198,389.90 = 83,366.41/x
  3. Step 3: Cross multiply
    143,760.67x = 198,389.90 × 83,366.41
  4. Step 4: Simplify right side
    143,760.67x = 16,539,053,743.26
  5. Step 5: Solve for x
    x = 16,539,053,743.26/143,760.67
  6. Step 6: Final answer
    x = 115,045.75

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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.