Home / 168,071.96-231,936.28-91,591.72

Finding the Fourth Proportional to 168,071.96, 231,936.28 and 91,591.72

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Solution

The fourth proportional to 168,071.96, 231,936.28 and 91,591.72 is: 126,394.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,071.96 : 231,936.28 = 91,591.72 : x
  2. Step 2: Convert to fraction form
    168,071.96/231,936.28 = 91,591.72/x
  3. Step 3: Cross multiply
    168,071.96x = 231,936.28 × 91,591.72
  4. Step 4: Simplify right side
    168,071.96x = 21,243,442,815.60
  5. Step 5: Solve for x
    x = 21,243,442,815.60/168,071.96
  6. Step 6: Final answer
    x = 126,394.93

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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.