Finding the Fourth Proportional to 129,439.23, 194,154.23 and 45,199.07
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Solution
The fourth proportional to 129,439.23, 194,154.23 and 45,199.07 is: 67,796.99
Step by Step Solution
- Step 1: Write the proportion equation
129,439.23 : 194,154.23 = 45,199.07 : x - Step 2: Convert to fraction form
129,439.23/194,154.23 = 45,199.07/x - Step 3: Cross multiply
129,439.23x = 194,154.23 × 45,199.07 - Step 4: Simplify right side
129,439.23x = 8,775,590,163.88 - Step 5: Solve for x
x = 8,775,590,163.88/129,439.23 - Step 6: Final answer
x = 67,796.99
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1.5x scale
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.