Finding the Fourth Proportional to 143,690.76, 198,296.79 and 80,029.62
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Solution
The fourth proportional to 143,690.76, 198,296.79 and 80,029.62 is: 110,442.84
Step by Step Solution
- Step 1: Write the proportion equation
143,690.76 : 198,296.79 = 80,029.62 : x - Step 2: Convert to fraction form
143,690.76/198,296.79 = 80,029.62/x - Step 3: Cross multiply
143,690.76x = 198,296.79 × 80,029.62 - Step 4: Simplify right side
143,690.76x = 15,869,615,759.44 - Step 5: Solve for x
x = 15,869,615,759.44/143,690.76 - Step 6: Final answer
x = 110,442.84
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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.