Home / 172,112,828.40-258,245,481.42-90,212,242.86

Finding the Fourth Proportional to 172,112,828.40, 258,245,481.42 and 90,212,242.86

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Solution

The fourth proportional to 172,112,828.40, 258,245,481.42 and 90,212,242.86 is: 135,358,324.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,112,828.40 : 258,245,481.42 = 90,212,242.86 : x
  2. Step 2: Convert to fraction form
    172,112,828.40/258,245,481.42 = 90,212,242.86/x
  3. Step 3: Cross multiply
    172,112,828.40x = 258,245,481.42 × 90,212,242.86
  4. Step 4: Simplify right side
    172,112,828.40x = 23,296,904,087,358,656
  5. Step 5: Solve for x
    x = 23,296,904,087,358,656/172,112,828.40
  6. Step 6: Final answer
    x = 135,358,324.56

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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.