Finding the Fourth Proportional to 143,806.25, 198,453.24 and 79,274.09
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Solution
The fourth proportional to 143,806.25, 198,453.24 and 79,274.09 is: 109,398.58
Step by Step Solution
- Step 1: Write the proportion equation
143,806.25 : 198,453.24 = 79,274.09 : x - Step 2: Convert to fraction form
143,806.25/198,453.24 = 79,274.09/x - Step 3: Cross multiply
143,806.25x = 198,453.24 × 79,274.09 - Step 4: Simplify right side
143,806.25x = 15,732,199,016.29 - Step 5: Solve for x
x = 15,732,199,016.29/143,806.25 - Step 6: Final answer
x = 109,398.58
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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.