Home / 167,913.78-231,720.64-91,431.69

Finding the Fourth Proportional to 167,913.78, 231,720.64 and 91,431.69

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Solution

The fourth proportional to 167,913.78, 231,720.64 and 91,431.69 is: 126,175.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,913.78 : 231,720.64 = 91,431.69 : x
  2. Step 2: Convert to fraction form
    167,913.78/231,720.64 = 91,431.69/x
  3. Step 3: Cross multiply
    167,913.78x = 231,720.64 × 91,431.69
  4. Step 4: Simplify right side
    167,913.78x = 21,186,609,723.08
  5. Step 5: Solve for x
    x = 21,186,609,723.08/167,913.78
  6. Step 6: Final answer
    x = 126,175.53

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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.