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Finding the Fourth Proportional to 143,509.44, 198,025.20 and 79,842.72

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Solution

The fourth proportional to 143,509.44, 198,025.20 and 79,842.72 is: 110,173.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,509.44 : 198,025.20 = 79,842.72 : x
  2. Step 2: Convert to fraction form
    143,509.44/198,025.20 = 79,842.72/x
  3. Step 3: Cross multiply
    143,509.44x = 198,025.20 × 79,842.72
  4. Step 4: Simplify right side
    143,509.44x = 15,810,870,596.54
  5. Step 5: Solve for x
    x = 15,810,870,596.54/143,509.44
  6. Step 6: Final answer
    x = 110,173.04

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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.