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Finding the Fourth Proportional to 120,392.82, 166,143.96 and 66,677.76

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Solution

The fourth proportional to 120,392.82, 166,143.96 and 66,677.76 is: 92,016.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,392.82 : 166,143.96 = 66,677.76 : x
  2. Step 2: Convert to fraction form
    120,392.82/166,143.96 = 66,677.76/x
  3. Step 3: Cross multiply
    120,392.82x = 166,143.96 × 66,677.76
  4. Step 4: Simplify right side
    120,392.82x = 11,078,107,090.33
  5. Step 5: Solve for x
    x = 11,078,107,090.33/120,392.82
  6. Step 6: Final answer
    x = 92,016.34

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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.