Home / 199,910.23-275,849.49-128,387.14

Finding the Fourth Proportional to 199,910.23, 275,849.49 and 128,387.14

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Solution

The fourth proportional to 199,910.23, 275,849.49 and 128,387.14 is: 177,157.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,910.23 : 275,849.49 = 128,387.14 : x
  2. Step 2: Convert to fraction form
    199,910.23/275,849.49 = 128,387.14/x
  3. Step 3: Cross multiply
    199,910.23x = 275,849.49 × 128,387.14
  4. Step 4: Simplify right side
    199,910.23x = 35,415,527,091.56
  5. Step 5: Solve for x
    x = 35,415,527,091.56/199,910.23
  6. Step 6: Final answer
    x = 177,157.15

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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.