Home / 91,119.31-125,676.76-66,912.66

Finding the Fourth Proportional to 91,119.31, 125,676.76 and 66,912.66

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Solution

The fourth proportional to 91,119.31, 125,676.76 and 66,912.66 is: 92,289.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,119.31 : 125,676.76 = 66,912.66 : x
  2. Step 2: Convert to fraction form
    91,119.31/125,676.76 = 66,912.66/x
  3. Step 3: Cross multiply
    91,119.31x = 125,676.76 × 66,912.66
  4. Step 4: Simplify right side
    91,119.31x = 8,409,366,311.78
  5. Step 5: Solve for x
    x = 8,409,366,311.78/91,119.31
  6. Step 6: Final answer
    x = 92,289.62

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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.