Finding the Fourth Proportional to 135,213.20, 202,819.80 and 85,349.60
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Solution
The fourth proportional to 135,213.20, 202,819.80 and 85,349.60 is: 128,024.40
Step by Step Solution
- Step 1: Write the proportion equation
135,213.20 : 202,819.80 = 85,349.60 : x - Step 2: Convert to fraction form
135,213.20/202,819.80 = 85,349.60/x - Step 3: Cross multiply
135,213.20x = 202,819.80 × 85,349.60 - Step 4: Simplify right side
135,213.20x = 17,310,588,802.08 - Step 5: Solve for x
x = 17,310,588,802.08/135,213.20 - Step 6: Final answer
x = 128,024.40
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.