Home / 126,651.36-189,906.80-51,824

Finding the Fourth Proportional to 126,651.36, 189,906.80 and 51,824

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Solution

The fourth proportional to 126,651.36, 189,906.80 and 51,824 is: 77,707.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,651.36 : 189,906.80 = 51,824 : x
  2. Step 2: Convert to fraction form
    126,651.36/189,906.80 = 51,824/x
  3. Step 3: Cross multiply
    126,651.36x = 189,906.80 × 51,824
  4. Step 4: Simplify right side
    126,651.36x = 9,841,730,003.20
  5. Step 5: Solve for x
    x = 9,841,730,003.20/126,651.36
  6. Step 6: Final answer
    x = 77,707.26

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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.