Finding the Fourth Proportional to 143,578.44, 198,118.71 and 79,907.58
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Solution
The fourth proportional to 143,578.44, 198,118.71 and 79,907.58 is: 110,261.59
Step by Step Solution
- Step 1: Write the proportion equation
143,578.44 : 198,118.71 = 79,907.58 : x - Step 2: Convert to fraction form
143,578.44/198,118.71 = 79,907.58/x - Step 3: Cross multiply
143,578.44x = 198,118.71 × 79,907.58 - Step 4: Simplify right side
143,578.44x = 15,831,186,668.82 - Step 5: Solve for x
x = 15,831,186,668.82/143,578.44 - Step 6: Final answer
x = 110,261.59
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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.