Home / 120,588.42-166,421.97-66,890.79

Finding the Fourth Proportional to 120,588.42, 166,421.97 and 66,890.79

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Solution

The fourth proportional to 120,588.42, 166,421.97 and 66,890.79 is: 92,314.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,588.42 : 166,421.97 = 66,890.79 : x
  2. Step 2: Convert to fraction form
    120,588.42/166,421.97 = 66,890.79/x
  3. Step 3: Cross multiply
    120,588.42x = 166,421.97 × 66,890.79
  4. Step 4: Simplify right side
    120,588.42x = 11,132,097,046.66
  5. Step 5: Solve for x
    x = 11,132,097,046.66/120,588.42
  6. Step 6: Final answer
    x = 92,314.81

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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.