Home / 128,738.93-193,076.06-61,229.30

Finding the Fourth Proportional to 128,738.93, 193,076.06 and 61,229.30

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Solution

The fourth proportional to 128,738.93, 193,076.06 and 61,229.30 is: 91,828.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,738.93 : 193,076.06 = 61,229.30 : x
  2. Step 2: Convert to fraction form
    128,738.93/193,076.06 = 61,229.30/x
  3. Step 3: Cross multiply
    128,738.93x = 193,076.06 × 61,229.30
  4. Step 4: Simplify right side
    128,738.93x = 11,821,910,729.03
  5. Step 5: Solve for x
    x = 11,821,910,729.03/128,738.93
  6. Step 6: Final answer
    x = 91,828.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.