Finding the Fourth Proportional to 126,763.52, 175,052.21 and 81,520.08
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Solution
The fourth proportional to 126,763.52, 175,052.21 and 81,520.08 is: 112,573.95
Step by Step Solution
- Step 1: Write the proportion equation
126,763.52 : 175,052.21 = 81,520.08 : x - Step 2: Convert to fraction form
126,763.52/175,052.21 = 81,520.08/x - Step 3: Cross multiply
126,763.52x = 175,052.21 × 81,520.08 - Step 4: Simplify right side
126,763.52x = 14,270,270,163.38 - Step 5: Solve for x
x = 14,270,270,163.38/126,763.52 - Step 6: Final answer
x = 112,573.95
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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.