Home / 98,537.36-135,821.84-76,989.51

Finding the Fourth Proportional to 98,537.36, 135,821.84 and 76,989.51

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Solution

The fourth proportional to 98,537.36, 135,821.84 and 76,989.51 is: 106,120.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,537.36 : 135,821.84 = 76,989.51 : x
  2. Step 2: Convert to fraction form
    98,537.36/135,821.84 = 76,989.51/x
  3. Step 3: Cross multiply
    98,537.36x = 135,821.84 × 76,989.51
  4. Step 4: Simplify right side
    98,537.36x = 10,456,856,523.95
  5. Step 5: Solve for x
    x = 10,456,856,523.95/98,537.36
  6. Step 6: Final answer
    x = 106,120.73

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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.