Finding the Fourth Proportional to 107,455.20, 161,182.80 and 54,311.10
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Solution
The fourth proportional to 107,455.20, 161,182.80 and 54,311.10 is: 81,466.65
Step by Step Solution
- Step 1: Write the proportion equation
107,455.20 : 161,182.80 = 54,311.10 : x - Step 2: Convert to fraction form
107,455.20/161,182.80 = 54,311.10/x - Step 3: Cross multiply
107,455.20x = 161,182.80 × 54,311.10 - Step 4: Simplify right side
107,455.20x = 8,754,015,169.08 - Step 5: Solve for x
x = 8,754,015,169.08/107,455.20 - Step 6: Final answer
x = 81,466.65
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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.