Home / 198,728.69-274,139.12-138,194.24

Finding the Fourth Proportional to 198,728.69, 274,139.12 and 138,194.24

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Solution

The fourth proportional to 198,728.69, 274,139.12 and 138,194.24 is: 190,634.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,728.69 : 274,139.12 = 138,194.24 : x
  2. Step 2: Convert to fraction form
    198,728.69/274,139.12 = 138,194.24/x
  3. Step 3: Cross multiply
    198,728.69x = 274,139.12 × 138,194.24
  4. Step 4: Simplify right side
    198,728.69x = 37,884,446,317.46
  5. Step 5: Solve for x
    x = 37,884,446,317.46/198,728.69
  6. Step 6: Final answer
    x = 190,634.01

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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.