Finding the Fourth Proportional to 125,213.52, 172,790.64 and 68,623.68
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Solution
The fourth proportional to 125,213.52, 172,790.64 and 68,623.68 is: 94,698.48
Step by Step Solution
- Step 1: Write the proportion equation
125,213.52 : 172,790.64 = 68,623.68 : x - Step 2: Convert to fraction form
125,213.52/172,790.64 = 68,623.68/x - Step 3: Cross multiply
125,213.52x = 172,790.64 × 68,623.68 - Step 4: Simplify right side
125,213.52x = 11,857,529,586.36 - Step 5: Solve for x
x = 11,857,529,586.36/125,213.52 - Step 6: Final answer
x = 94,698.48
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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.