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Finding the Fourth Proportional to 166,330, 229,540.28 and 90,883.36

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Solution

The fourth proportional to 166,330, 229,540.28 and 90,883.36 is: 125,421.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,330 : 229,540.28 = 90,883.36 : x
  2. Step 2: Convert to fraction form
    166,330/229,540.28 = 90,883.36/x
  3. Step 3: Cross multiply
    166,330x = 229,540.28 × 90,883.36
  4. Step 4: Simplify right side
    166,330x = 20,861,391,901.74
  5. Step 5: Solve for x
    x = 20,861,391,901.74/166,330
  6. Step 6: Final answer
    x = 125,421.70

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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.