Home / 121,845,578.23-168,145,910.34-66,090,859.36

Finding the Fourth Proportional to 121,845,578.23, 168,145,910.34 and 66,090,859.36

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Solution

The fourth proportional to 121,845,578.23, 168,145,910.34 and 66,090,859.36 is: 91,204,850.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,845,578.23 : 168,145,910.34 = 66,090,859.36 : x
  2. Step 2: Convert to fraction form
    121,845,578.23/168,145,910.34 = 66,090,859.36/x
  3. Step 3: Cross multiply
    121,845,578.23x = 168,145,910.34 × 66,090,859.36
  4. Step 4: Simplify right side
    121,845,578.23x = 11,112,907,712,240,110
  5. Step 5: Solve for x
    x = 11,112,907,712,240,110/121,845,578.23
  6. Step 6: Final answer
    x = 91,204,850.22

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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.