Home / 143,649.14-198,239.01-79,992.86

Finding the Fourth Proportional to 143,649.14, 198,239.01 and 79,992.86

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Solution

The fourth proportional to 143,649.14, 198,239.01 and 79,992.86 is: 110,391.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,649.14 : 198,239.01 = 79,992.86 : x
  2. Step 2: Convert to fraction form
    143,649.14/198,239.01 = 79,992.86/x
  3. Step 3: Cross multiply
    143,649.14x = 198,239.01 × 79,992.86
  4. Step 4: Simplify right side
    143,649.14x = 15,857,705,373.47
  5. Step 5: Solve for x
    x = 15,857,705,373.47/143,649.14
  6. Step 6: Final answer
    x = 110,391.93

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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.