Home / 193,491.18-290,348.82-81,161.40

Finding the Fourth Proportional to 193,491.18, 290,348.82 and 81,161.40

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Solution

The fourth proportional to 193,491.18, 290,348.82 and 81,161.40 is: 121,789.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,491.18 : 290,348.82 = 81,161.40 : x
  2. Step 2: Convert to fraction form
    193,491.18/290,348.82 = 81,161.40/x
  3. Step 3: Cross multiply
    193,491.18x = 290,348.82 × 81,161.40
  4. Step 4: Simplify right side
    193,491.18x = 23,565,116,719.55
  5. Step 5: Solve for x
    x = 23,565,116,719.55/193,491.18
  6. Step 6: Final answer
    x = 121,789.10

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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.