Home / 143,604.29-198,172.27-79,072.20

Finding the Fourth Proportional to 143,604.29, 198,172.27 and 79,072.20

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Solution

The fourth proportional to 143,604.29, 198,172.27 and 79,072.20 is: 109,118.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,604.29 : 198,172.27 = 79,072.20 : x
  2. Step 2: Convert to fraction form
    143,604.29/198,172.27 = 79,072.20/x
  3. Step 3: Cross multiply
    143,604.29x = 198,172.27 × 79,072.20
  4. Step 4: Simplify right side
    143,604.29x = 15,669,917,466.73
  5. Step 5: Solve for x
    x = 15,669,917,466.73/143,604.29
  6. Step 6: Final answer
    x = 109,118.73

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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.