Finding the Fourth Proportional to 198,435.69, 273,690.33 and 137,283.63
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Solution
The fourth proportional to 198,435.69, 273,690.33 and 137,283.63 is: 189,346.99
Step by Step Solution
- Step 1: Write the proportion equation
198,435.69 : 273,690.33 = 137,283.63 : x - Step 2: Convert to fraction form
198,435.69/273,690.33 = 137,283.63/x - Step 3: Cross multiply
198,435.69x = 273,690.33 × 137,283.63 - Step 4: Simplify right side
198,435.69x = 37,573,200,457.15 - Step 5: Solve for x
x = 37,573,200,457.15/198,435.69 - Step 6: Final answer
x = 189,346.99
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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.