Finding the Fourth Proportional to 76,191.68, 114,039.12 and 68,916.80
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Solution
The fourth proportional to 76,191.68, 114,039.12 and 68,916.80 is: 103,150.52
Step by Step Solution
- Step 1: Write the proportion equation
76,191.68 : 114,039.12 = 68,916.80 : x - Step 2: Convert to fraction form
76,191.68/114,039.12 = 68,916.80/x - Step 3: Cross multiply
76,191.68x = 114,039.12 × 68,916.80 - Step 4: Simplify right side
76,191.68x = 7,859,211,225.22 - Step 5: Solve for x
x = 7,859,211,225.22/76,191.68 - Step 6: Final answer
x = 103,150.52
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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.