Home / 209,091,029.81-313,672,276.27-86,202,169.92

Finding the Fourth Proportional to 209,091,029.81, 313,672,276.27 and 86,202,169.92

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Solution

The fourth proportional to 209,091,029.81, 313,672,276.27 and 86,202,169.92 is: 129,317,985.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,091,029.81 : 313,672,276.27 = 86,202,169.92 : x
  2. Step 2: Convert to fraction form
    209,091,029.81/313,672,276.27 = 86,202,169.92/x
  3. Step 3: Cross multiply
    209,091,029.81x = 313,672,276.27 × 86,202,169.92
  4. Step 4: Simplify right side
    209,091,029.81x = 27,039,230,858,219,724
  5. Step 5: Solve for x
    x = 27,039,230,858,219,724/209,091,029.81
  6. Step 6: Final answer
    x = 129,317,985.97

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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.