Home / 121,845,578.73-168,145,911.03-66,090,859.86

Finding the Fourth Proportional to 121,845,578.73, 168,145,911.03 and 66,090,859.86

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Solution

The fourth proportional to 121,845,578.73, 168,145,911.03 and 66,090,859.86 is: 91,204,850.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,845,578.73 : 168,145,911.03 = 66,090,859.86 : x
  2. Step 2: Convert to fraction form
    121,845,578.73/168,145,911.03 = 66,090,859.86/x
  3. Step 3: Cross multiply
    121,845,578.73x = 168,145,911.03 × 66,090,859.86
  4. Step 4: Simplify right side
    121,845,578.73x = 11,112,907,841,915,758
  5. Step 5: Solve for x
    x = 11,112,907,841,915,758/121,845,578.73
  6. Step 6: Final answer
    x = 91,204,850.91

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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.