Home / 198,858.53-274,428.07-108,218.31

Finding the Fourth Proportional to 198,858.53, 274,428.07 and 108,218.31

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Solution

The fourth proportional to 198,858.53, 274,428.07 and 108,218.31 is: 149,343.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,858.53 : 274,428.07 = 108,218.31 : x
  2. Step 2: Convert to fraction form
    198,858.53/274,428.07 = 108,218.31/x
  3. Step 3: Cross multiply
    198,858.53x = 274,428.07 × 108,218.31
  4. Step 4: Simplify right side
    198,858.53x = 29,698,141,681.42
  5. Step 5: Solve for x
    x = 29,698,141,681.42/198,858.53
  6. Step 6: Final answer
    x = 149,343.07

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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.