Home / 191,208.58-263,874.24-105,171.20

Finding the Fourth Proportional to 191,208.58, 263,874.24 and 105,171.20

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Solution

The fourth proportional to 191,208.58, 263,874.24 and 105,171.20 is: 145,139.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,208.58 : 263,874.24 = 105,171.20 : x
  2. Step 2: Convert to fraction form
    191,208.58/263,874.24 = 105,171.20/x
  3. Step 3: Cross multiply
    191,208.58x = 263,874.24 × 105,171.20
  4. Step 4: Simplify right side
    191,208.58x = 27,751,970,469.89
  5. Step 5: Solve for x
    x = 27,751,970,469.89/191,208.58
  6. Step 6: Final answer
    x = 145,139.78

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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.