Home / 121,101.66-167,166.79-90,974.37

Finding the Fourth Proportional to 121,101.66, 167,166.79 and 90,974.37

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Solution

The fourth proportional to 121,101.66, 167,166.79 and 90,974.37 is: 125,579.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,101.66 : 167,166.79 = 90,974.37 : x
  2. Step 2: Convert to fraction form
    121,101.66/167,166.79 = 90,974.37/x
  3. Step 3: Cross multiply
    121,101.66x = 167,166.79 × 90,974.37
  4. Step 4: Simplify right side
    121,101.66x = 15,207,893,405.17
  5. Step 5: Solve for x
    x = 15,207,893,405.17/121,101.66
  6. Step 6: Final answer
    x = 125,579.56

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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.