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Finding the Fourth Proportional to 166,691.40, 230,032.26 and 91,239

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Solution

The fourth proportional to 166,691.40, 230,032.26 and 91,239 is: 125,908.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,691.40 : 230,032.26 = 91,239 : x
  2. Step 2: Convert to fraction form
    166,691.40/230,032.26 = 91,239/x
  3. Step 3: Cross multiply
    166,691.40x = 230,032.26 × 91,239
  4. Step 4: Simplify right side
    166,691.40x = 20,987,913,370.14
  5. Step 5: Solve for x
    x = 20,987,913,370.14/166,691.40
  6. Step 6: Final answer
    x = 125,908.80

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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.