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Finding the Fourth Proportional to 143,673.77, 198,269.72 and 83,279.41

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Solution

The fourth proportional to 143,673.77, 198,269.72 and 83,279.41 is: 114,925.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,673.77 : 198,269.72 = 83,279.41 : x
  2. Step 2: Convert to fraction form
    143,673.77/198,269.72 = 83,279.41/x
  3. Step 3: Cross multiply
    143,673.77x = 198,269.72 × 83,279.41
  4. Step 4: Simplify right side
    143,673.77x = 16,511,785,171.14
  5. Step 5: Solve for x
    x = 16,511,785,171.14/143,673.77
  6. Step 6: Final answer
    x = 114,925.54

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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.