Home / 128,407,791.94-177,200,518.20-78,153,845.26

Finding the Fourth Proportional to 128,407,791.94, 177,200,518.20 and 78,153,845.26

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Solution

The fourth proportional to 128,407,791.94, 177,200,518.20 and 78,153,845.26 is: 107,850,946.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,407,791.94 : 177,200,518.20 = 78,153,845.26 : x
  2. Step 2: Convert to fraction form
    128,407,791.94/177,200,518.20 = 78,153,845.26/x
  3. Step 3: Cross multiply
    128,407,791.94x = 177,200,518.20 × 78,153,845.26
  4. Step 4: Simplify right side
    128,407,791.94x = 13,848,901,879,394,614
  5. Step 5: Solve for x
    x = 13,848,901,879,394,614/128,407,791.94
  6. Step 6: Final answer
    x = 107,850,946.35

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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.