Finding the Fourth Proportional to 139,415.76, 209,136.24 and 39,576.96
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Solution
The fourth proportional to 139,415.76, 209,136.24 and 39,576.96 is: 59,369.02
Step by Step Solution
- Step 1: Write the proportion equation
139,415.76 : 209,136.24 = 39,576.96 : x - Step 2: Convert to fraction form
139,415.76/209,136.24 = 39,576.96/x - Step 3: Cross multiply
139,415.76x = 209,136.24 × 39,576.96 - Step 4: Simplify right side
139,415.76x = 8,276,976,605.03 - Step 5: Solve for x
x = 8,276,976,605.03/139,415.76 - Step 6: Final answer
x = 59,369.02
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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.