Finding the Fourth Proportional to 143,273,581.26, 197,718,209.19 and 81,397,315.14
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Solution
The fourth proportional to 143,273,581.26, 197,718,209.19 and 81,397,315.14 is: 112,328,673.86
Step by Step Solution
- Step 1: Write the proportion equation
143,273,581.26 : 197,718,209.19 = 81,397,315.14 : x - Step 2: Convert to fraction form
143,273,581.26/197,718,209.19 = 81,397,315.14/x - Step 3: Cross multiply
143,273,581.26x = 197,718,209.19 × 81,397,315.14 - Step 4: Simplify right side
143,273,581.26x = 16,093,731,382,354,874 - Step 5: Solve for x
x = 16,093,731,382,354,874/143,273,581.26 - Step 6: Final answer
x = 112,328,673.86
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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.