Finding the Fourth Proportional to 140,520.29, 193,922.61 and 76,858.09
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Solution
The fourth proportional to 140,520.29, 193,922.61 and 76,858.09 is: 106,066.69
Step by Step Solution
- Step 1: Write the proportion equation
140,520.29 : 193,922.61 = 76,858.09 : x - Step 2: Convert to fraction form
140,520.29/193,922.61 = 76,858.09/x - Step 3: Cross multiply
140,520.29x = 193,922.61 × 76,858.09 - Step 4: Simplify right side
140,520.29x = 14,904,521,412.41 - Step 5: Solve for x
x = 14,904,521,412.41/140,520.29 - Step 6: Final answer
x = 106,066.69
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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.