Finding the Fourth Proportional to 198,457.20, 273,869.84 and 107,812.44
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Solution
The fourth proportional to 198,457.20, 273,869.84 and 107,812.44 is: 148,780.57
Step by Step Solution
- Step 1: Write the proportion equation
198,457.20 : 273,869.84 = 107,812.44 : x - Step 2: Convert to fraction form
198,457.20/273,869.84 = 107,812.44/x - Step 3: Cross multiply
198,457.20x = 273,869.84 × 107,812.44 - Step 4: Simplify right side
198,457.20x = 29,526,575,153.75 - Step 5: Solve for x
x = 29,526,575,153.75/198,457.20 - Step 6: Final answer
x = 148,780.57
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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.