Finding the Fourth Proportional to 126,278,415.02, 172,998,533.64 and 121,557,209.15
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Solution
The fourth proportional to 126,278,415.02, 172,998,533.64 and 121,557,209.15 is: 166,530,589.83
Step by Step Solution
- Step 1: Write the proportion equation
126,278,415.02 : 172,998,533.64 = 121,557,209.15 : x - Step 2: Convert to fraction form
126,278,415.02/172,998,533.64 = 121,557,209.15/x - Step 3: Cross multiply
126,278,415.02x = 172,998,533.64 × 121,557,209.15 - Step 4: Simplify right side
126,278,415.02x = 21,029,218,936,320,792 - Step 5: Solve for x
x = 21,029,218,936,320,792/126,278,415.02 - Step 6: Final answer
x = 166,530,589.83
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.