Finding the Fourth Proportional to 112,214.75, 154,859.60 and 61,916.99
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Solution
The fourth proportional to 112,214.75, 154,859.60 and 61,916.99 is: 85,447.23
Step by Step Solution
- Step 1: Write the proportion equation
112,214.75 : 154,859.60 = 61,916.99 : x - Step 2: Convert to fraction form
112,214.75/154,859.60 = 61,916.99/x - Step 3: Cross multiply
112,214.75x = 154,859.60 × 61,916.99 - Step 4: Simplify right side
112,214.75x = 9,588,439,995.02 - Step 5: Solve for x
x = 9,588,439,995.02/112,214.75 - Step 6: Final answer
x = 85,447.23
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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.