Home / 105,939.75-158,909.31-66,524.52

Finding the Fourth Proportional to 105,939.75, 158,909.31 and 66,524.52

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Solution

The fourth proportional to 105,939.75, 158,909.31 and 66,524.52 is: 99,786.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,939.75 : 158,909.31 = 66,524.52 : x
  2. Step 2: Convert to fraction form
    105,939.75/158,909.31 = 66,524.52/x
  3. Step 3: Cross multiply
    105,939.75x = 158,909.31 × 66,524.52
  4. Step 4: Simplify right side
    105,939.75x = 10,571,365,571.28
  5. Step 5: Solve for x
    x = 10,571,365,571.28/105,939.75
  6. Step 6: Final answer
    x = 99,786.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.