Finding the Fourth Proportional to 212,851.40, 318,839.70 and 107,729.60
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Solution
The fourth proportional to 212,851.40, 318,839.70 and 107,729.60 is: 161,373.02
Step by Step Solution
- Step 1: Write the proportion equation
212,851.40 : 318,839.70 = 107,729.60 : x - Step 2: Convert to fraction form
212,851.40/318,839.70 = 107,729.60/x - Step 3: Cross multiply
212,851.40x = 318,839.70 × 107,729.60 - Step 4: Simplify right side
212,851.40x = 34,348,473,345.12 - Step 5: Solve for x
x = 34,348,473,345.12/212,851.40 - Step 6: Final answer
x = 161,373.02
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.