Home / 128,407,790.94-177,200,516.82-78,153,844.26

Finding the Fourth Proportional to 128,407,790.94, 177,200,516.82 and 78,153,844.26

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Solution

The fourth proportional to 128,407,790.94, 177,200,516.82 and 78,153,844.26 is: 107,850,944.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,407,790.94 : 177,200,516.82 = 78,153,844.26 : x
  2. Step 2: Convert to fraction form
    128,407,790.94/177,200,516.82 = 78,153,844.26/x
  3. Step 3: Cross multiply
    128,407,790.94x = 177,200,516.82 × 78,153,844.26
  4. Step 4: Simplify right side
    128,407,790.94x = 13,848,901,594,341,790
  5. Step 5: Solve for x
    x = 13,848,901,594,341,790/128,407,790.94
  6. Step 6: Final answer
    x = 107,850,944.97

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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.