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Finding the Fourth Proportional to 166,287, 229,481.10 and 90,840.36

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Solution

The fourth proportional to 166,287, 229,481.10 and 90,840.36 is: 125,362.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,287 : 229,481.10 = 90,840.36 : x
  2. Step 2: Convert to fraction form
    166,287/229,481.10 = 90,840.36/x
  3. Step 3: Cross multiply
    166,287x = 229,481.10 × 90,840.36
  4. Step 4: Simplify right side
    166,287x = 20,846,145,737.20
  5. Step 5: Solve for x
    x = 20,846,145,737.20/166,287
  6. Step 6: Final answer
    x = 125,362.45

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1.5x scale

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.