Finding the Fourth Proportional to 135,194.21, 202,820.40 and 40,431.90
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Solution
The fourth proportional to 135,194.21, 202,820.40 and 40,431.90 is: 60,656.55
Step by Step Solution
- Step 1: Write the proportion equation
135,194.21 : 202,820.40 = 40,431.90 : x - Step 2: Convert to fraction form
135,194.21/202,820.40 = 40,431.90/x - Step 3: Cross multiply
135,194.21x = 202,820.40 × 40,431.90 - Step 4: Simplify right side
135,194.21x = 8,200,414,130.76 - Step 5: Solve for x
x = 8,200,414,130.76/135,194.21 - Step 6: Final answer
x = 60,656.55
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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.