Home / 198,640,821.78-273,969,040.77-129,048,625.26

Finding the Fourth Proportional to 198,640,821.78, 273,969,040.77 and 129,048,625.26

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Solution

The fourth proportional to 198,640,821.78, 273,969,040.77 and 129,048,625.26 is: 177,986,215.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,640,821.78 : 273,969,040.77 = 129,048,625.26 : x
  2. Step 2: Convert to fraction form
    198,640,821.78/273,969,040.77 = 129,048,625.26/x
  3. Step 3: Cross multiply
    198,640,821.78x = 273,969,040.77 × 129,048,625.26
  4. Step 4: Simplify right side
    198,640,821.78x = 35,355,328,075,169,392
  5. Step 5: Solve for x
    x = 35,355,328,075,169,392/198,640,821.78
  6. Step 6: Final answer
    x = 177,986,215.31

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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.