Home / 143,652.12-198,239.82-79,121.79

Finding the Fourth Proportional to 143,652.12, 198,239.82 and 79,121.79

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Solution

The fourth proportional to 143,652.12, 198,239.82 and 79,121.79 is: 109,188.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,652.12 : 198,239.82 = 79,121.79 : x
  2. Step 2: Convert to fraction form
    143,652.12/198,239.82 = 79,121.79/x
  3. Step 3: Cross multiply
    143,652.12x = 198,239.82 × 79,121.79
  4. Step 4: Simplify right side
    143,652.12x = 15,685,089,407.68
  5. Step 5: Solve for x
    x = 15,685,089,407.68/143,652.12
  6. Step 6: Final answer
    x = 109,188.01

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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.