Home / 121,845,579.23-168,145,911.72-66,090,860.36

Finding the Fourth Proportional to 121,845,579.23, 168,145,911.72 and 66,090,860.36

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Solution

The fourth proportional to 121,845,579.23, 168,145,911.72 and 66,090,860.36 is: 91,204,851.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,845,579.23 : 168,145,911.72 = 66,090,860.36 : x
  2. Step 2: Convert to fraction form
    121,845,579.23/168,145,911.72 = 66,090,860.36/x
  3. Step 3: Cross multiply
    121,845,579.23x = 168,145,911.72 × 66,090,860.36
  4. Step 4: Simplify right side
    121,845,579.23x = 11,112,907,971,591,408
  5. Step 5: Solve for x
    x = 11,112,907,971,591,408/121,845,579.23
  6. Step 6: Final answer
    x = 91,204,851.60

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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.