Finding the Fourth Proportional to 112,531.26, 155,219.96 and 72,181.11
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Solution
The fourth proportional to 112,531.26, 155,219.96 and 72,181.11 is: 99,562.99
Step by Step Solution
- Step 1: Write the proportion equation
112,531.26 : 155,219.96 = 72,181.11 : x - Step 2: Convert to fraction form
112,531.26/155,219.96 = 72,181.11/x - Step 3: Cross multiply
112,531.26x = 155,219.96 × 72,181.11 - Step 4: Simplify right side
112,531.26x = 11,203,949,006.96 - Step 5: Solve for x
x = 11,203,949,006.96/112,531.26 - Step 6: Final answer
x = 99,562.99
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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.