Home / 91,170.38-125,912.13-69,427.55

Finding the Fourth Proportional to 91,170.38, 125,912.13 and 69,427.55

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Solution

The fourth proportional to 91,170.38, 125,912.13 and 69,427.55 is: 95,883.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,170.38 : 125,912.13 = 69,427.55 : x
  2. Step 2: Convert to fraction form
    91,170.38/125,912.13 = 69,427.55/x
  3. Step 3: Cross multiply
    91,170.38x = 125,912.13 × 69,427.55
  4. Step 4: Simplify right side
    91,170.38x = 8,741,770,701.18
  5. Step 5: Solve for x
    x = 8,741,770,701.18/91,170.38
  6. Step 6: Final answer
    x = 95,883.89

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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.