Home / 144,040.66-198,786.09-80,390.86

Finding the Fourth Proportional to 144,040.66, 198,786.09 and 80,390.86

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Solution

The fourth proportional to 144,040.66, 198,786.09 and 80,390.86 is: 110,944.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,040.66 : 198,786.09 = 80,390.86 : x
  2. Step 2: Convert to fraction form
    144,040.66/198,786.09 = 80,390.86/x
  3. Step 3: Cross multiply
    144,040.66x = 198,786.09 × 80,390.86
  4. Step 4: Simplify right side
    144,040.66x = 15,980,584,731.14
  5. Step 5: Solve for x
    x = 15,980,584,731.14/144,040.66
  6. Step 6: Final answer
    x = 110,944.96

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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.