Home / 143,608.63-198,185.29-79,080.67

Finding the Fourth Proportional to 143,608.63, 198,185.29 and 79,080.67

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Solution

The fourth proportional to 143,608.63, 198,185.29 and 79,080.67 is: 109,134.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,608.63 : 198,185.29 = 79,080.67 : x
  2. Step 2: Convert to fraction form
    143,608.63/198,185.29 = 79,080.67/x
  3. Step 3: Cross multiply
    143,608.63x = 198,185.29 × 79,080.67
  4. Step 4: Simplify right side
    143,608.63x = 15,672,624,452.58
  5. Step 5: Solve for x
    x = 15,672,624,452.58/143,608.63
  6. Step 6: Final answer
    x = 109,134.28

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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.