Finding the Fourth Proportional to 135,659.40, 202,913.10 and 121,720.20
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Solution
The fourth proportional to 135,659.40, 202,913.10 and 121,720.20 is: 182,063.48
Step by Step Solution
- Step 1: Write the proportion equation
135,659.40 : 202,913.10 = 121,720.20 : x - Step 2: Convert to fraction form
135,659.40/202,913.10 = 121,720.20/x - Step 3: Cross multiply
135,659.40x = 202,913.10 × 121,720.20 - Step 4: Simplify right side
135,659.40x = 24,698,623,114.62 - Step 5: Solve for x
x = 24,698,623,114.62/135,659.40 - Step 6: Final answer
x = 182,063.48
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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.