Finding the Fourth Proportional to 135,659.40, 203,489.10 and 120,625.80
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Solution
The fourth proportional to 135,659.40, 203,489.10 and 120,625.80 is: 180,938.70
Step by Step Solution
- Step 1: Write the proportion equation
135,659.40 : 203,489.10 = 120,625.80 : x - Step 2: Convert to fraction form
135,659.40/203,489.10 = 120,625.80/x - Step 3: Cross multiply
135,659.40x = 203,489.10 × 120,625.80 - Step 4: Simplify right side
135,659.40x = 24,546,035,478.78 - Step 5: Solve for x
x = 24,546,035,478.78/135,659.40 - Step 6: Final answer
x = 180,938.70
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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.