Finding the Fourth Proportional to 100,806.68, 139,119.18 and 58,379.96
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Solution
The fourth proportional to 100,806.68, 139,119.18 and 58,379.96 is: 80,567.80
Step by Step Solution
- Step 1: Write the proportion equation
100,806.68 : 139,119.18 = 58,379.96 : x - Step 2: Convert to fraction form
100,806.68/139,119.18 = 58,379.96/x - Step 3: Cross multiply
100,806.68x = 139,119.18 × 58,379.96 - Step 4: Simplify right side
100,806.68x = 8,121,772,163.63 - Step 5: Solve for x
x = 8,121,772,163.63/100,806.68 - Step 6: Final answer
x = 80,567.80
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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.