Home / 195,970,380.91-270,301,439.12-128,967,991.51

Finding the Fourth Proportional to 195,970,380.91, 270,301,439.12 and 128,967,991.51

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Solution

The fourth proportional to 195,970,380.91, 270,301,439.12 and 128,967,991.51 is: 177,885,216.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    195,970,380.91 : 270,301,439.12 = 128,967,991.51 : x
  2. Step 2: Convert to fraction form
    195,970,380.91/270,301,439.12 = 128,967,991.51/x
  3. Step 3: Cross multiply
    195,970,380.91x = 270,301,439.12 × 128,967,991.51
  4. Step 4: Simplify right side
    195,970,380.91x = 34,860,233,705,568,944
  5. Step 5: Solve for x
    x = 34,860,233,705,568,944/195,970,380.91
  6. Step 6: Final answer
    x = 177,885,216.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.