Finding the Fourth Proportional to 129,482.64, 194,243.08 and 66,338.48
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Solution
The fourth proportional to 129,482.64, 194,243.08 and 66,338.48 is: 99,517.52
Step by Step Solution
- Step 1: Write the proportion equation
129,482.64 : 194,243.08 = 66,338.48 : x - Step 2: Convert to fraction form
129,482.64/194,243.08 = 66,338.48/x - Step 3: Cross multiply
129,482.64x = 194,243.08 × 66,338.48 - Step 4: Simplify right side
129,482.64x = 12,885,790,677.72 - Step 5: Solve for x
x = 12,885,790,677.72/129,482.64 - Step 6: Final answer
x = 99,517.52
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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.