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Finding the Fourth Proportional to 143,655.93, 198,245.48 and 79,996.01

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Solution

The fourth proportional to 143,655.93, 198,245.48 and 79,996.01 is: 110,394.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,655.93 : 198,245.48 = 79,996.01 : x
  2. Step 2: Convert to fraction form
    143,655.93/198,245.48 = 79,996.01/x
  3. Step 3: Cross multiply
    143,655.93x = 198,245.48 × 79,996.01
  4. Step 4: Simplify right side
    143,655.93x = 15,858,846,009.33
  5. Step 5: Solve for x
    x = 15,858,846,009.33/143,655.93
  6. Step 6: Final answer
    x = 110,394.65

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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.