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Finding the Fourth Proportional to 126,655.60, 190,021.44 and 37,912

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Solution

The fourth proportional to 126,655.60, 190,021.44 and 37,912 is: 56,879.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,655.60 : 190,021.44 = 37,912 : x
  2. Step 2: Convert to fraction form
    126,655.60/190,021.44 = 37,912/x
  3. Step 3: Cross multiply
    126,655.60x = 190,021.44 × 37,912
  4. Step 4: Simplify right side
    126,655.60x = 7,204,092,833.28
  5. Step 5: Solve for x
    x = 7,204,092,833.28/126,655.60
  6. Step 6: Final answer
    x = 56,879.39

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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.