Home / 121,689.54-167,931.23-67,974.66

Finding the Fourth Proportional to 121,689.54, 167,931.23 and 67,974.66

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Solution

The fourth proportional to 121,689.54, 167,931.23 and 67,974.66 is: 93,804.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,689.54 : 167,931.23 = 67,974.66 : x
  2. Step 2: Convert to fraction form
    121,689.54/167,931.23 = 67,974.66/x
  3. Step 3: Cross multiply
    121,689.54x = 167,931.23 × 67,974.66
  4. Step 4: Simplify right side
    121,689.54x = 11,415,067,922.76
  5. Step 5: Solve for x
    x = 11,415,067,922.76/121,689.54
  6. Step 6: Final answer
    x = 93,804.84

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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.