Home / 121,690.54-167,932.60-67,975.66

Finding the Fourth Proportional to 121,690.54, 167,932.60 and 67,975.66

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Solution

The fourth proportional to 121,690.54, 167,932.60 and 67,975.66 is: 93,806.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,690.54 : 167,932.60 = 67,975.66 : x
  2. Step 2: Convert to fraction form
    121,690.54/167,932.60 = 67,975.66/x
  3. Step 3: Cross multiply
    121,690.54x = 167,932.60 × 67,975.66
  4. Step 4: Simplify right side
    121,690.54x = 11,415,329,320.52
  5. Step 5: Solve for x
    x = 11,415,329,320.52/121,690.54
  6. Step 6: Final answer
    x = 93,806.22

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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.