Home / 198,504.17-297,588.79-86,099.71

Finding the Fourth Proportional to 198,504.17, 297,588.79 and 86,099.71

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Solution

The fourth proportional to 198,504.17, 297,588.79 and 86,099.71 is: 129,076.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,504.17 : 297,588.79 = 86,099.71 : x
  2. Step 2: Convert to fraction form
    198,504.17/297,588.79 = 86,099.71/x
  3. Step 3: Cross multiply
    198,504.17x = 297,588.79 × 86,099.71
  4. Step 4: Simplify right side
    198,504.17x = 25,622,308,518.25
  5. Step 5: Solve for x
    x = 25,622,308,518.25/198,504.17
  6. Step 6: Final answer
    x = 129,076.93

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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.