Finding the Fourth Proportional to 121,000.20, 166,995.12 and 73,270.12
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Solution
The fourth proportional to 121,000.20, 166,995.12 and 73,270.12 is: 101,121.75
Step by Step Solution
- Step 1: Write the proportion equation
121,000.20 : 166,995.12 = 73,270.12 : x - Step 2: Convert to fraction form
121,000.20/166,995.12 = 73,270.12/x - Step 3: Cross multiply
121,000.20x = 166,995.12 × 73,270.12 - Step 4: Simplify right side
121,000.20x = 12,235,752,481.81 - Step 5: Solve for x
x = 12,235,752,481.81/121,000.20 - Step 6: Final answer
x = 101,121.75
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.