Finding the Fourth Proportional to 135,129.60, 202,694.40 and 40,363.20
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Solution
The fourth proportional to 135,129.60, 202,694.40 and 40,363.20 is: 60,544.80
Step by Step Solution
- Step 1: Write the proportion equation
135,129.60 : 202,694.40 = 40,363.20 : x - Step 2: Convert to fraction form
135,129.60/202,694.40 = 40,363.20/x - Step 3: Cross multiply
135,129.60x = 202,694.40 × 40,363.20 - Step 4: Simplify right side
135,129.60x = 8,181,394,606.08 - Step 5: Solve for x
x = 8,181,394,606.08/135,129.60 - Step 6: Final answer
x = 60,544.80
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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.