Finding the Fourth Proportional to 135,331.20, 202,996.80 and 91,094.40
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Solution
The fourth proportional to 135,331.20, 202,996.80 and 91,094.40 is: 136,641.60
Step by Step Solution
- Step 1: Write the proportion equation
135,331.20 : 202,996.80 = 91,094.40 : x - Step 2: Convert to fraction form
135,331.20/202,996.80 = 91,094.40/x - Step 3: Cross multiply
135,331.20x = 202,996.80 × 91,094.40 - Step 4: Simplify right side
135,331.20x = 18,491,871,697.92 - Step 5: Solve for x
x = 18,491,871,697.92/135,331.20 - Step 6: Final answer
x = 136,641.60
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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.