Home / 193,816.20-290,724.30-140,939.40

Finding the Fourth Proportional to 193,816.20, 290,724.30 and 140,939.40

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Solution

The fourth proportional to 193,816.20, 290,724.30 and 140,939.40 is: 211,409.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,816.20 : 290,724.30 = 140,939.40 : x
  2. Step 2: Convert to fraction form
    193,816.20/290,724.30 = 140,939.40/x
  3. Step 3: Cross multiply
    193,816.20x = 290,724.30 × 140,939.40
  4. Step 4: Simplify right side
    193,816.20x = 40,974,508,407.42
  5. Step 5: Solve for x
    x = 40,974,508,407.42/193,816.20
  6. Step 6: Final answer
    x = 211,409.10

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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.