Finding the Fourth Proportional to 133,085.70, 183,614.18 and 87,786.05
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Solution
The fourth proportional to 133,085.70, 183,614.18 and 87,786.05 is: 121,115.66
Step by Step Solution
- Step 1: Write the proportion equation
133,085.70 : 183,614.18 = 87,786.05 : x - Step 2: Convert to fraction form
133,085.70/183,614.18 = 87,786.05/x - Step 3: Cross multiply
133,085.70x = 183,614.18 × 87,786.05 - Step 4: Simplify right side
133,085.70x = 16,118,762,229.19 - Step 5: Solve for x
x = 16,118,762,229.19/133,085.70 - Step 6: Final answer
x = 121,115.66
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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.