Finding the Fourth Proportional to 117,230.99, 161,689.50 and 100,905.98
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Solution
The fourth proportional to 117,230.99, 161,689.50 and 100,905.98 is: 139,173.42
Step by Step Solution
- Step 1: Write the proportion equation
117,230.99 : 161,689.50 = 100,905.98 : x - Step 2: Convert to fraction form
117,230.99/161,689.50 = 100,905.98/x - Step 3: Cross multiply
117,230.99x = 161,689.50 × 100,905.98 - Step 4: Simplify right side
117,230.99x = 16,315,437,453.21 - Step 5: Solve for x
x = 16,315,437,453.21/117,230.99 - Step 6: Final answer
x = 139,173.42
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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.