Finding the Fourth Proportional to 143,992.58, 198,706.98 and 79,467.88
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Solution
The fourth proportional to 143,992.58, 198,706.98 and 79,467.88 is: 109,664.14
Step by Step Solution
- Step 1: Write the proportion equation
143,992.58 : 198,706.98 = 79,467.88 : x - Step 2: Convert to fraction form
143,992.58/198,706.98 = 79,467.88/x - Step 3: Cross multiply
143,992.58x = 198,706.98 × 79,467.88 - Step 4: Simplify right side
143,992.58x = 15,790,822,441.80 - Step 5: Solve for x
x = 15,790,822,441.80/143,992.58 - Step 6: Final answer
x = 109,664.14
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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.