Finding the Fourth Proportional to 129,810.24, 194,545.68 and 66,576.96
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Solution
The fourth proportional to 129,810.24, 194,545.68 and 66,576.96 is: 99,778.41
Step by Step Solution
- Step 1: Write the proportion equation
129,810.24 : 194,545.68 = 66,576.96 : x - Step 2: Convert to fraction form
129,810.24/194,545.68 = 66,576.96/x - Step 3: Cross multiply
129,810.24x = 194,545.68 × 66,576.96 - Step 4: Simplify right side
129,810.24x = 12,952,259,955.53 - Step 5: Solve for x
x = 12,952,259,955.53/129,810.24 - Step 6: Final answer
x = 99,778.41
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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.