Home / 143,620.20-198,190.53-79,956.63

Finding the Fourth Proportional to 143,620.20, 198,190.53 and 79,956.63

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Solution

The fourth proportional to 143,620.20, 198,190.53 and 79,956.63 is: 110,337.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,620.20 : 198,190.53 = 79,956.63 : x
  2. Step 2: Convert to fraction form
    143,620.20/198,190.53 = 79,956.63/x
  3. Step 3: Cross multiply
    143,620.20x = 198,190.53 × 79,956.63
  4. Step 4: Simplify right side
    143,620.20x = 15,846,646,876.71
  5. Step 5: Solve for x
    x = 15,846,646,876.71/143,620.20
  6. Step 6: Final answer
    x = 110,337.17

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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.