Home / 193,661.28-290,401.20-81,317.52

Finding the Fourth Proportional to 193,661.28, 290,401.20 and 81,317.52

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Solution

The fourth proportional to 193,661.28, 290,401.20 and 81,317.52 is: 121,938.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,661.28 : 290,401.20 = 81,317.52 : x
  2. Step 2: Convert to fraction form
    193,661.28/290,401.20 = 81,317.52/x
  3. Step 3: Cross multiply
    193,661.28x = 290,401.20 × 81,317.52
  4. Step 4: Simplify right side
    193,661.28x = 23,614,705,389.02
  5. Step 5: Solve for x
    x = 23,614,705,389.02/193,661.28
  6. Step 6: Final answer
    x = 121,938.19

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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.