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Finding the Fourth Proportional to 143,702, 198,303.84 and 80,036.56

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Solution

The fourth proportional to 143,702, 198,303.84 and 80,036.56 is: 110,447.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,702 : 198,303.84 = 80,036.56 : x
  2. Step 2: Convert to fraction form
    143,702/198,303.84 = 80,036.56/x
  3. Step 3: Cross multiply
    143,702x = 198,303.84 × 80,036.56
  4. Step 4: Simplify right side
    143,702x = 15,871,557,188.39
  5. Step 5: Solve for x
    x = 15,871,557,188.39/143,702
  6. Step 6: Final answer
    x = 110,447.71

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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.