Home / 143,764.64-198,396.54-79,236.18

Finding the Fourth Proportional to 143,764.64, 198,396.54 and 79,236.18

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Solution

The fourth proportional to 143,764.64, 198,396.54 and 79,236.18 is: 109,346.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,764.64 : 198,396.54 = 79,236.18 : x
  2. Step 2: Convert to fraction form
    143,764.64/198,396.54 = 79,236.18/x
  3. Step 3: Cross multiply
    143,764.64x = 198,396.54 × 79,236.18
  4. Step 4: Simplify right side
    143,764.64x = 15,720,183,954.82
  5. Step 5: Solve for x
    x = 15,720,183,954.82/143,764.64
  6. Step 6: Final answer
    x = 109,346.67

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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.