Home / 105,040.20-145,144.26-79,845.96

Finding the Fourth Proportional to 105,040.20, 145,144.26 and 79,845.96

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Solution

The fourth proportional to 105,040.20, 145,144.26 and 79,845.96 is: 110,330.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,040.20 : 145,144.26 = 79,845.96 : x
  2. Step 2: Convert to fraction form
    105,040.20/145,144.26 = 79,845.96/x
  3. Step 3: Cross multiply
    105,040.20x = 145,144.26 × 79,845.96
  4. Step 4: Simplify right side
    105,040.20x = 11,589,182,778.19
  5. Step 5: Solve for x
    x = 11,589,182,778.19/105,040.20
  6. Step 6: Final answer
    x = 110,330.93

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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.