Home / 209,091,028.57-313,672,274.42-86,202,168.68

Finding the Fourth Proportional to 209,091,028.57, 313,672,274.42 and 86,202,168.68

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Solution

The fourth proportional to 209,091,028.57, 313,672,274.42 and 86,202,168.68 is: 129,317,984.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,091,028.57 : 313,672,274.42 = 86,202,168.68 : x
  2. Step 2: Convert to fraction form
    209,091,028.57/313,672,274.42 = 86,202,168.68/x
  3. Step 3: Cross multiply
    209,091,028.57x = 313,672,274.42 × 86,202,168.68
  4. Step 4: Simplify right side
    209,091,028.57x = 27,039,230,310,145,264
  5. Step 5: Solve for x
    x = 27,039,230,310,145,264/209,091,028.57
  6. Step 6: Final answer
    x = 129,317,984.11

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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.