Home / 198,341.09-273,759.32-121,878.71

Finding the Fourth Proportional to 198,341.09, 273,759.32 and 121,878.71

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Solution

The fourth proportional to 198,341.09, 273,759.32 and 121,878.71 is: 168,222.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,341.09 : 273,759.32 = 121,878.71 : x
  2. Step 2: Convert to fraction form
    198,341.09/273,759.32 = 121,878.71/x
  3. Step 3: Cross multiply
    198,341.09x = 273,759.32 × 121,878.71
  4. Step 4: Simplify right side
    198,341.09x = 33,365,432,162.68
  5. Step 5: Solve for x
    x = 33,365,432,162.68/198,341.09
  6. Step 6: Final answer
    x = 168,222.49

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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.