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Finding the Fourth Proportional to 166,420.32, 229,660.03 and 90,968.82

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Solution

The fourth proportional to 166,420.32, 229,660.03 and 90,968.82 is: 125,536.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,420.32 : 229,660.03 = 90,968.82 : x
  2. Step 2: Convert to fraction form
    166,420.32/229,660.03 = 90,968.82/x
  3. Step 3: Cross multiply
    166,420.32x = 229,660.03 × 90,968.82
  4. Step 4: Simplify right side
    166,420.32x = 20,891,901,930.26
  5. Step 5: Solve for x
    x = 20,891,901,930.26/166,420.32
  6. Step 6: Final answer
    x = 125,536.97

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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.