Home / 189,081.86-283,617.03-76,759.36

Finding the Fourth Proportional to 189,081.86, 283,617.03 and 76,759.36

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Solution

The fourth proportional to 189,081.86, 283,617.03 and 76,759.36 is: 115,136.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,081.86 : 283,617.03 = 76,759.36 : x
  2. Step 2: Convert to fraction form
    189,081.86/283,617.03 = 76,759.36/x
  3. Step 3: Cross multiply
    189,081.86x = 283,617.03 × 76,759.36
  4. Step 4: Simplify right side
    189,081.86x = 21,770,261,286.71
  5. Step 5: Solve for x
    x = 21,770,261,286.71/189,081.86
  6. Step 6: Final answer
    x = 115,136.70

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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.