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Finding the Fourth Proportional to 166,975.36, 230,430 and 91,528

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Solution

The fourth proportional to 166,975.36, 230,430 and 91,528 is: 126,310.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,975.36 : 230,430 = 91,528 : x
  2. Step 2: Convert to fraction form
    166,975.36/230,430 = 91,528/x
  3. Step 3: Cross multiply
    166,975.36x = 230,430 × 91,528
  4. Step 4: Simplify right side
    166,975.36x = 21,090,797,040
  5. Step 5: Solve for x
    x = 21,090,797,040/166,975.36
  6. Step 6: Final answer
    x = 126,310.83

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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.