Finding the Fourth Proportional to 139,638.03, 209,463.53 and 39,804.99
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Solution
The fourth proportional to 139,638.03, 209,463.53 and 39,804.99 is: 59,709.33
Step by Step Solution
- Step 1: Write the proportion equation
139,638.03 : 209,463.53 = 39,804.99 : x - Step 2: Convert to fraction form
139,638.03/209,463.53 = 39,804.99/x - Step 3: Cross multiply
139,638.03x = 209,463.53 × 39,804.99 - Step 4: Simplify right side
139,638.03x = 8,337,693,517.99 - Step 5: Solve for x
x = 8,337,693,517.99/139,638.03 - Step 6: Final answer
x = 59,709.33
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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.