Finding the Fourth Proportional to 139,516.56, 209,336.70 and 79,542.84
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Solution
The fourth proportional to 139,516.56, 209,336.70 and 79,542.84 is: 119,349.53
Step by Step Solution
- Step 1: Write the proportion equation
139,516.56 : 209,336.70 = 79,542.84 : x - Step 2: Convert to fraction form
139,516.56/209,336.70 = 79,542.84/x - Step 3: Cross multiply
139,516.56x = 209,336.70 × 79,542.84 - Step 4: Simplify right side
139,516.56x = 16,651,235,634.23 - Step 5: Solve for x
x = 16,651,235,634.23/139,516.56 - Step 6: Final answer
x = 119,349.53
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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.