Home / 98,661.24-136,198.05-57,819.72

Finding the Fourth Proportional to 98,661.24, 136,198.05 and 57,819.72

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Solution

The fourth proportional to 98,661.24, 136,198.05 and 57,819.72 is: 79,817.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,661.24 : 136,198.05 = 57,819.72 : x
  2. Step 2: Convert to fraction form
    98,661.24/136,198.05 = 57,819.72/x
  3. Step 3: Cross multiply
    98,661.24x = 136,198.05 × 57,819.72
  4. Step 4: Simplify right side
    98,661.24x = 7,874,932,971.00
  5. Step 5: Solve for x
    x = 7,874,932,971.00/98,661.24
  6. Step 6: Final answer
    x = 79,817.90

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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.