Home / 193,479.18-290,330.82-81,149.40

Finding the Fourth Proportional to 193,479.18, 290,330.82 and 81,149.40

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Solution

The fourth proportional to 193,479.18, 290,330.82 and 81,149.40 is: 121,771.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,479.18 : 290,330.82 = 81,149.40 : x
  2. Step 2: Convert to fraction form
    193,479.18/290,330.82 = 81,149.40/x
  3. Step 3: Cross multiply
    193,479.18x = 290,330.82 × 81,149.40
  4. Step 4: Simplify right side
    193,479.18x = 23,560,171,844.51
  5. Step 5: Solve for x
    x = 23,560,171,844.51/193,479.18
  6. Step 6: Final answer
    x = 121,771.10

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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.