Home / 143,621.70-198,192.60-79,958.13

Finding the Fourth Proportional to 143,621.70, 198,192.60 and 79,958.13

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Solution

The fourth proportional to 143,621.70, 198,192.60 and 79,958.13 is: 110,339.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,621.70 : 198,192.60 = 79,958.13 : x
  2. Step 2: Convert to fraction form
    143,621.70/198,192.60 = 79,958.13/x
  3. Step 3: Cross multiply
    143,621.70x = 198,192.60 × 79,958.13
  4. Step 4: Simplify right side
    143,621.70x = 15,847,109,675.84
  5. Step 5: Solve for x
    x = 15,847,109,675.84/143,621.70
  6. Step 6: Final answer
    x = 110,339.24

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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.