Finding the Fourth Proportional to 129,681.28, 194,466.84 and 50,782.96
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Solution
The fourth proportional to 129,681.28, 194,466.84 and 50,782.96 is: 76,152.87
Step by Step Solution
- Step 1: Write the proportion equation
129,681.28 : 194,466.84 = 50,782.96 : x - Step 2: Convert to fraction form
129,681.28/194,466.84 = 50,782.96/x - Step 3: Cross multiply
129,681.28x = 194,466.84 × 50,782.96 - Step 4: Simplify right side
129,681.28x = 9,875,601,757.05 - Step 5: Solve for x
x = 9,875,601,757.05/129,681.28 - Step 6: Final answer
x = 76,152.87
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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.