Finding the Fourth Proportional to 135,621.40, 202,856.10 and 121,682.20
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Solution
The fourth proportional to 135,621.40, 202,856.10 and 121,682.20 is: 182,006.50
Step by Step Solution
- Step 1: Write the proportion equation
135,621.40 : 202,856.10 = 121,682.20 : x - Step 2: Convert to fraction form
135,621.40/202,856.10 = 121,682.20/x - Step 3: Cross multiply
135,621.40x = 202,856.10 × 121,682.20 - Step 4: Simplify right side
135,621.40x = 24,683,976,531.42 - Step 5: Solve for x
x = 24,683,976,531.42/135,621.40 - Step 6: Final answer
x = 182,006.50
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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.