Home / 98,015.05-135,291.23-77,907.61

Finding the Fourth Proportional to 98,015.05, 135,291.23 and 77,907.61

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Solution

The fourth proportional to 98,015.05, 135,291.23 and 77,907.61 is: 107,536.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,015.05 : 135,291.23 = 77,907.61 : x
  2. Step 2: Convert to fraction form
    98,015.05/135,291.23 = 77,907.61/x
  3. Step 3: Cross multiply
    98,015.05x = 135,291.23 × 77,907.61
  4. Step 4: Simplify right side
    98,015.05x = 10,540,216,383.26
  5. Step 5: Solve for x
    x = 10,540,216,383.26/98,015.05
  6. Step 6: Final answer
    x = 107,536.71

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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.