Home / 143,915.37-198,604.08-80,257.20

Finding the Fourth Proportional to 143,915.37, 198,604.08 and 80,257.20

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Solution

The fourth proportional to 143,915.37, 198,604.08 and 80,257.20 is: 110,755.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,915.37 : 198,604.08 = 80,257.20 : x
  2. Step 2: Convert to fraction form
    143,915.37/198,604.08 = 80,257.20/x
  3. Step 3: Cross multiply
    143,915.37x = 198,604.08 × 80,257.20
  4. Step 4: Simplify right side
    143,915.37x = 15,939,407,369.38
  5. Step 5: Solve for x
    x = 15,939,407,369.38/143,915.37
  6. Step 6: Final answer
    x = 110,755.42

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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.