Finding the Fourth Proportional to 129,779.88, 194,576.36 and 79,756.64
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Solution
The fourth proportional to 129,779.88, 194,576.36 and 79,756.64 is: 119,577.52
Step by Step Solution
- Step 1: Write the proportion equation
129,779.88 : 194,576.36 = 79,756.64 : x - Step 2: Convert to fraction form
129,779.88/194,576.36 = 79,756.64/x - Step 3: Cross multiply
129,779.88x = 194,576.36 × 79,756.64 - Step 4: Simplify right side
129,779.88x = 15,518,756,697.03 - Step 5: Solve for x
x = 15,518,756,697.03/129,779.88 - Step 6: Final answer
x = 119,577.52
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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.