Home / 190,218,686.44-262,582,143.78-128,422,728.04

Finding the Fourth Proportional to 190,218,686.44, 262,582,143.78 and 128,422,728.04

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Solution

The fourth proportional to 190,218,686.44, 262,582,143.78 and 128,422,728.04 is: 177,277,615.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,218,686.44 : 262,582,143.78 = 128,422,728.04 : x
  2. Step 2: Convert to fraction form
    190,218,686.44/262,582,143.78 = 128,422,728.04/x
  3. Step 3: Cross multiply
    190,218,686.44x = 262,582,143.78 × 128,422,728.04
  4. Step 4: Simplify right side
    190,218,686.44x = 33,721,515,238,819,120
  5. Step 5: Solve for x
    x = 33,721,515,238,819,120/190,218,686.44
  6. Step 6: Final answer
    x = 177,277,615.94

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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.