Finding the Fourth Proportional to 135,937.20, 203,905.80 and 82,793.10
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Solution
The fourth proportional to 135,937.20, 203,905.80 and 82,793.10 is: 124,189.65
Step by Step Solution
- Step 1: Write the proportion equation
135,937.20 : 203,905.80 = 82,793.10 : x - Step 2: Convert to fraction form
135,937.20/203,905.80 = 82,793.10/x - Step 3: Cross multiply
135,937.20x = 203,905.80 × 82,793.10 - Step 4: Simplify right side
135,937.20x = 16,881,993,289.98 - Step 5: Solve for x
x = 16,881,993,289.98/135,937.20 - Step 6: Final answer
x = 124,189.65
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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.