Home / 143,806.74-198,453.93-79,274.60

Finding the Fourth Proportional to 143,806.74, 198,453.93 and 79,274.60

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Solution

The fourth proportional to 143,806.74, 198,453.93 and 79,274.60 is: 109,399.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,806.74 : 198,453.93 = 79,274.60 : x
  2. Step 2: Convert to fraction form
    143,806.74/198,453.93 = 79,274.60/x
  3. Step 3: Cross multiply
    143,806.74x = 198,453.93 × 79,274.60
  4. Step 4: Simplify right side
    143,806.74x = 15,732,354,530.54
  5. Step 5: Solve for x
    x = 15,732,354,530.54/143,806.74
  6. Step 6: Final answer
    x = 109,399.28

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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.