Finding the Fourth Proportional to 143,063.68, 197,424.12 and 79,399.84
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Solution
The fourth proportional to 143,063.68, 197,424.12 and 79,399.84 is: 109,569.69
Step by Step Solution
- Step 1: Write the proportion equation
143,063.68 : 197,424.12 = 79,399.84 : x - Step 2: Convert to fraction form
143,063.68/197,424.12 = 79,399.84/x - Step 3: Cross multiply
143,063.68x = 197,424.12 × 79,399.84 - Step 4: Simplify right side
143,063.68x = 15,675,443,540.14 - Step 5: Solve for x
x = 15,675,443,540.14/143,063.68 - Step 6: Final answer
x = 109,569.69
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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.