Home / 120,916.12-166,860.82-67,199.72

Finding the Fourth Proportional to 120,916.12, 166,860.82 and 67,199.72

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Solution

The fourth proportional to 120,916.12, 166,860.82 and 67,199.72 is: 92,733.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,916.12 : 166,860.82 = 67,199.72 : x
  2. Step 2: Convert to fraction form
    120,916.12/166,860.82 = 67,199.72/x
  3. Step 3: Cross multiply
    120,916.12x = 166,860.82 × 67,199.72
  4. Step 4: Simplify right side
    120,916.12x = 11,213,000,382.97
  5. Step 5: Solve for x
    x = 11,213,000,382.97/120,916.12
  6. Step 6: Final answer
    x = 92,733.71

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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.