Home / 120,442.68-166,212.08-66,728.43

Finding the Fourth Proportional to 120,442.68, 166,212.08 and 66,728.43

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Solution

The fourth proportional to 120,442.68, 166,212.08 and 66,728.43 is: 92,085.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,442.68 : 166,212.08 = 66,728.43 : x
  2. Step 2: Convert to fraction form
    120,442.68/166,212.08 = 66,728.43/x
  3. Step 3: Cross multiply
    120,442.68x = 166,212.08 × 66,728.43
  4. Step 4: Simplify right side
    120,442.68x = 11,091,070,811.79
  5. Step 5: Solve for x
    x = 11,091,070,811.79/120,442.68
  6. Step 6: Final answer
    x = 92,085.89

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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.