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Finding the Fourth Proportional to 143,610.92, 198,190.92 and 79,947.32

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Solution

The fourth proportional to 143,610.92, 198,190.92 and 79,947.32 is: 110,331.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,610.92 : 198,190.92 = 79,947.32 : x
  2. Step 2: Convert to fraction form
    143,610.92/198,190.92 = 79,947.32/x
  3. Step 3: Cross multiply
    143,610.92x = 198,190.92 × 79,947.32
  4. Step 4: Simplify right side
    143,610.92x = 15,844,832,902.33
  5. Step 5: Solve for x
    x = 15,844,832,902.33/143,610.92
  6. Step 6: Final answer
    x = 110,331.67

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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.