Finding the Fourth Proportional to 129,790.16, 194,569.53 and 69,850.82
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Solution
The fourth proportional to 129,790.16, 194,569.53 and 69,850.82 is: 104,713.95
Step by Step Solution
- Step 1: Write the proportion equation
129,790.16 : 194,569.53 = 69,850.82 : x - Step 2: Convert to fraction form
129,790.16/194,569.53 = 69,850.82/x - Step 3: Cross multiply
129,790.16x = 194,569.53 × 69,850.82 - Step 4: Simplify right side
129,790.16x = 13,590,840,300.21 - Step 5: Solve for x
x = 13,590,840,300.21/129,790.16 - Step 6: Final answer
x = 104,713.95
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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.