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Finding the Fourth Proportional to 143,903.59, 198,641.67 and 108,197.33

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Solution

The fourth proportional to 143,903.59, 198,641.67 and 108,197.33 is: 149,353.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,903.59 : 198,641.67 = 108,197.33 : x
  2. Step 2: Convert to fraction form
    143,903.59/198,641.67 = 108,197.33/x
  3. Step 3: Cross multiply
    143,903.59x = 198,641.67 × 108,197.33
  4. Step 4: Simplify right side
    143,903.59x = 21,492,497,327.53
  5. Step 5: Solve for x
    x = 21,492,497,327.53/143,903.59
  6. Step 6: Final answer
    x = 149,353.45

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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.