Finding the Fourth Proportional to 136,790.24, 188,762.70 and 76,364.72
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Solution
The fourth proportional to 136,790.24, 188,762.70 and 76,364.72 is: 105,378.94
Step by Step Solution
- Step 1: Write the proportion equation
136,790.24 : 188,762.70 = 76,364.72 : x - Step 2: Convert to fraction form
136,790.24/188,762.70 = 76,364.72/x - Step 3: Cross multiply
136,790.24x = 188,762.70 × 76,364.72 - Step 4: Simplify right side
136,790.24x = 14,414,809,788.13 - Step 5: Solve for x
x = 14,414,809,788.13/136,790.24 - Step 6: Final answer
x = 105,378.94
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.