Home / 143,826.56-198,484.80-80,172.80

Finding the Fourth Proportional to 143,826.56, 198,484.80 and 80,172.80

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Solution

The fourth proportional to 143,826.56, 198,484.80 and 80,172.80 is: 110,640.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,826.56 : 198,484.80 = 80,172.80 : x
  2. Step 2: Convert to fraction form
    143,826.56/198,484.80 = 80,172.80/x
  3. Step 3: Cross multiply
    143,826.56x = 198,484.80 × 80,172.80
  4. Step 4: Simplify right side
    143,826.56x = 15,913,082,173.44
  5. Step 5: Solve for x
    x = 15,913,082,173.44/143,826.56
  6. Step 6: Final answer
    x = 110,640.78

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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.