Home / 120,931.95-166,885.92-67,221.96

Finding the Fourth Proportional to 120,931.95, 166,885.92 and 67,221.96

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Solution

The fourth proportional to 120,931.95, 166,885.92 and 67,221.96 is: 92,766.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,931.95 : 166,885.92 = 67,221.96 : x
  2. Step 2: Convert to fraction form
    120,931.95/166,885.92 = 67,221.96/x
  3. Step 3: Cross multiply
    120,931.95x = 166,885.92 × 67,221.96
  4. Step 4: Simplify right side
    120,931.95x = 11,218,398,638.80
  5. Step 5: Solve for x
    x = 11,218,398,638.80/120,931.95
  6. Step 6: Final answer
    x = 92,766.21

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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.