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Finding the Fourth Proportional to 120,353.76, 166,093.37 and 66,638.76

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Solution

The fourth proportional to 120,353.76, 166,093.37 and 66,638.76 is: 91,964.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,353.76 : 166,093.37 = 66,638.76 : x
  2. Step 2: Convert to fraction form
    120,353.76/166,093.37 = 66,638.76/x
  3. Step 3: Cross multiply
    120,353.76x = 166,093.37 × 66,638.76
  4. Step 4: Simplify right side
    120,353.76x = 11,068,256,221.02
  5. Step 5: Solve for x
    x = 11,068,256,221.02/120,353.76
  6. Step 6: Final answer
    x = 91,964.36

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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.