Home / 198,420-273,837.96-109,013.28

Finding the Fourth Proportional to 198,420, 273,837.96 and 109,013.28

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Solution

The fourth proportional to 198,420, 273,837.96 and 109,013.28 is: 150,448.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,420 : 273,837.96 = 109,013.28 : x
  2. Step 2: Convert to fraction form
    198,420/273,837.96 = 109,013.28/x
  3. Step 3: Cross multiply
    198,420x = 273,837.96 × 109,013.28
  4. Step 4: Simplify right side
    198,420x = 29,851,974,208.11
  5. Step 5: Solve for x
    x = 29,851,974,208.11/198,420
  6. Step 6: Final answer
    x = 150,448.41

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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.