Home / 143,621.76-198,193.44-79,956.32

Finding the Fourth Proportional to 143,621.76, 198,193.44 and 79,956.32

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Solution

The fourth proportional to 143,621.76, 198,193.44 and 79,956.32 is: 110,337.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,621.76 : 198,193.44 = 79,956.32 : x
  2. Step 2: Convert to fraction form
    143,621.76/198,193.44 = 79,956.32/x
  3. Step 3: Cross multiply
    143,621.76x = 198,193.44 × 79,956.32
  4. Step 4: Simplify right side
    143,621.76x = 15,846,818,110.54
  5. Step 5: Solve for x
    x = 15,846,818,110.54/143,621.76
  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.