Finding the Fourth Proportional to 144,480,549.99, 199,382,147.73 and 78,399,367.77
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Solution
The fourth proportional to 144,480,549.99, 199,382,147.73 and 78,399,367.77 is: 108,190,578.79
Step by Step Solution
- Step 1: Write the proportion equation
144,480,549.99 : 199,382,147.73 = 78,399,367.77 : x - Step 2: Convert to fraction form
144,480,549.99/199,382,147.73 = 78,399,367.77/x - Step 3: Cross multiply
144,480,549.99x = 199,382,147.73 × 78,399,367.77 - Step 4: Simplify right side
144,480,549.99x = 15,631,434,326,656,738 - Step 5: Solve for x
x = 15,631,434,326,656,738/144,480,549.99 - Step 6: Final answer
x = 108,190,578.79
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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.