Home / 198,402.12-273,873.44-138,007.80

Finding the Fourth Proportional to 198,402.12, 273,873.44 and 138,007.80

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Solution

The fourth proportional to 198,402.12, 273,873.44 and 138,007.80 is: 190,505.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,402.12 : 273,873.44 = 138,007.80 : x
  2. Step 2: Convert to fraction form
    198,402.12/273,873.44 = 138,007.80/x
  3. Step 3: Cross multiply
    198,402.12x = 273,873.44 × 138,007.80
  4. Step 4: Simplify right side
    198,402.12x = 37,796,670,242.79
  5. Step 5: Solve for x
    x = 37,796,670,242.79/198,402.12
  6. Step 6: Final answer
    x = 190,505.37

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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.