Home / 121,237.97-167,377.79-81,019.85

Finding the Fourth Proportional to 121,237.97, 167,377.79 and 81,019.85

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Solution

The fourth proportional to 121,237.97, 167,377.79 and 81,019.85 is: 111,853.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,237.97 : 167,377.79 = 81,019.85 : x
  2. Step 2: Convert to fraction form
    121,237.97/167,377.79 = 81,019.85/x
  3. Step 3: Cross multiply
    121,237.97x = 167,377.79 × 81,019.85
  4. Step 4: Simplify right side
    121,237.97x = 13,560,922,804.79
  5. Step 5: Solve for x
    x = 13,560,922,804.79/121,237.97
  6. Step 6: Final answer
    x = 111,853.76

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1.5x scale

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.