Home / 199,009.19-298,513.11-80,680.25

Finding the Fourth Proportional to 199,009.19, 298,513.11 and 80,680.25

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Solution

The fourth proportional to 199,009.19, 298,513.11 and 80,680.25 is: 121,020.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,009.19 : 298,513.11 = 80,680.25 : x
  2. Step 2: Convert to fraction form
    199,009.19/298,513.11 = 80,680.25/x
  3. Step 3: Cross multiply
    199,009.19x = 298,513.11 × 80,680.25
  4. Step 4: Simplify right side
    199,009.19x = 24,084,112,343.08
  5. Step 5: Solve for x
    x = 24,084,112,343.08/199,009.19
  6. Step 6: Final answer
    x = 121,020.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.