Home / 100,112,767.92-138,084,247.08-91,879,370.64

Finding the Fourth Proportional to 100,112,767.92, 138,084,247.08 and 91,879,370.64

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Solution

The fourth proportional to 100,112,767.92, 138,084,247.08 and 91,879,370.64 is: 126,728,028.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,112,767.92 : 138,084,247.08 = 91,879,370.64 : x
  2. Step 2: Convert to fraction form
    100,112,767.92/138,084,247.08 = 91,879,370.64/x
  3. Step 3: Cross multiply
    100,112,767.92x = 138,084,247.08 × 91,879,370.64
  4. Step 4: Simplify right side
    100,112,767.92x = 12,687,093,717,008,660
  5. Step 5: Solve for x
    x = 12,687,093,717,008,660/100,112,767.92
  6. Step 6: Final answer
    x = 126,728,028.61

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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.