Finding the Fourth Proportional to 140,425.26, 193,786.94 and 76,763.07
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Solution
The fourth proportional to 140,425.26, 193,786.94 and 76,763.07 is: 105,933.08
Step by Step Solution
- Step 1: Write the proportion equation
140,425.26 : 193,786.94 = 76,763.07 : x - Step 2: Convert to fraction form
140,425.26/193,786.94 = 76,763.07/x - Step 3: Cross multiply
140,425.26x = 193,786.94 × 76,763.07 - Step 4: Simplify right side
140,425.26x = 14,875,680,440.31 - Step 5: Solve for x
x = 14,875,680,440.31/140,425.26 - Step 6: Final answer
x = 105,933.08
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1.5x scale
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.