Finding the Fourth Proportional to 112,511.68, 155,192.96 and 72,161.53
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Solution
The fourth proportional to 112,511.68, 155,192.96 and 72,161.53 is: 99,535.99
Step by Step Solution
- Step 1: Write the proportion equation
112,511.68 : 155,192.96 = 72,161.53 : x - Step 2: Convert to fraction form
112,511.68/155,192.96 = 72,161.53/x - Step 3: Cross multiply
112,511.68x = 155,192.96 × 72,161.53 - Step 4: Simplify right side
112,511.68x = 11,198,960,690.04 - Step 5: Solve for x
x = 11,198,960,690.04/112,511.68 - Step 6: Final answer
x = 99,535.99
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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.