Finding the Fourth Proportional to 103,170,879.97, 142,375,809.54 and 56,760,137.44
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Solution
The fourth proportional to 103,170,879.97, 142,375,809.54 and 56,760,137.44 is: 78,328,987.02
Step by Step Solution
- Step 1: Write the proportion equation
103,170,879.97 : 142,375,809.54 = 56,760,137.44 : x - Step 2: Convert to fraction form
103,170,879.97/142,375,809.54 = 56,760,137.44/x - Step 3: Cross multiply
103,170,879.97x = 142,375,809.54 × 56,760,137.44 - Step 4: Simplify right side
103,170,879.97x = 8,081,270,517,478,573 - Step 5: Solve for x
x = 8,081,270,517,478,573/103,170,879.97 - Step 6: Final answer
x = 78,328,987.02
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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.