Home / 189,667.16-261,778.05-113,147.96

Finding the Fourth Proportional to 189,667.16, 261,778.05 and 113,147.96

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Solution

The fourth proportional to 189,667.16, 261,778.05 and 113,147.96 is: 156,166.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,667.16 : 261,778.05 = 113,147.96 : x
  2. Step 2: Convert to fraction form
    189,667.16/261,778.05 = 113,147.96/x
  3. Step 3: Cross multiply
    189,667.16x = 261,778.05 × 113,147.96
  4. Step 4: Simplify right side
    189,667.16x = 29,619,651,578.75
  5. Step 5: Solve for x
    x = 29,619,651,578.75/189,667.16
  6. Step 6: Final answer
    x = 156,166.47

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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.