Finding the Fourth Proportional to 102,431.05, 141,304.60 and 68,447.88
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Solution
The fourth proportional to 102,431.05, 141,304.60 and 68,447.88 is: 94,424.50
Step by Step Solution
- Step 1: Write the proportion equation
102,431.05 : 141,304.60 = 68,447.88 : x - Step 2: Convert to fraction form
102,431.05/141,304.60 = 68,447.88/x - Step 3: Cross multiply
102,431.05x = 141,304.60 × 68,447.88 - Step 4: Simplify right side
102,431.05x = 9,672,000,304.25 - Step 5: Solve for x
x = 9,672,000,304.25/102,431.05 - Step 6: Final answer
x = 94,424.50
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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.