Finding the Fourth Proportional to 136,709.40, 205,129.44 and 74,379.84
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Solution
The fourth proportional to 136,709.40, 205,129.44 and 74,379.84 is: 111,605.31
Step by Step Solution
- Step 1: Write the proportion equation
136,709.40 : 205,129.44 = 74,379.84 : x - Step 2: Convert to fraction form
136,709.40/205,129.44 = 74,379.84/x - Step 3: Cross multiply
136,709.40x = 205,129.44 × 74,379.84 - Step 4: Simplify right side
136,709.40x = 15,257,494,926.49 - Step 5: Solve for x
x = 15,257,494,926.49/136,709.40 - Step 6: Final answer
x = 111,605.31
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.