Home / 120,485.88-166,262.96-66,767.76

Finding the Fourth Proportional to 120,485.88, 166,262.96 and 66,767.76

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Solution

The fourth proportional to 120,485.88, 166,262.96 and 66,767.76 is: 92,135.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,485.88 : 166,262.96 = 66,767.76 : x
  2. Step 2: Convert to fraction form
    120,485.88/166,262.96 = 66,767.76/x
  3. Step 3: Cross multiply
    120,485.88x = 166,262.96 × 66,767.76
  4. Step 4: Simplify right side
    120,485.88x = 11,101,005,410.17
  5. Step 5: Solve for x
    x = 11,101,005,410.17/120,485.88
  6. Step 6: Final answer
    x = 92,135.32

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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.