Finding the Fourth Proportional to 99,573.12, 149,530.14 and 66,505.68
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Solution
The fourth proportional to 99,573.12, 149,530.14 and 66,505.68 is: 99,872.37
Step by Step Solution
- Step 1: Write the proportion equation
99,573.12 : 149,530.14 = 66,505.68 : x - Step 2: Convert to fraction form
99,573.12/149,530.14 = 66,505.68/x - Step 3: Cross multiply
99,573.12x = 149,530.14 × 66,505.68 - Step 4: Simplify right side
99,573.12x = 9,944,603,641.20 - Step 5: Solve for x
x = 9,944,603,641.20/99,573.12 - Step 6: Final answer
x = 99,872.37
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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.