Home / 193,914,906.30-290,872,359.45-78,981,932.70

Finding the Fourth Proportional to 193,914,906.30, 290,872,359.45 and 78,981,932.70

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Solution

The fourth proportional to 193,914,906.30, 290,872,359.45 and 78,981,932.70 is: 118,472,899.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,914,906.30 : 290,872,359.45 = 78,981,932.70 : x
  2. Step 2: Convert to fraction form
    193,914,906.30/290,872,359.45 = 78,981,932.70/x
  3. Step 3: Cross multiply
    193,914,906.30x = 290,872,359.45 × 78,981,932.70
  4. Step 4: Simplify right side
    193,914,906.30x = 22,973,661,118,370,108
  5. Step 5: Solve for x
    x = 22,973,661,118,370,108/193,914,906.30
  6. Step 6: Final answer
    x = 118,472,899.05

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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.