Finding the Fourth Proportional to 143,847.24, 215,883.84 and 99,784.08
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Solution
The fourth proportional to 143,847.24, 215,883.84 and 99,784.08 is: 149,754.49
Step by Step Solution
- Step 1: Write the proportion equation
143,847.24 : 215,883.84 = 99,784.08 : x - Step 2: Convert to fraction form
143,847.24/215,883.84 = 99,784.08/x - Step 3: Cross multiply
143,847.24x = 215,883.84 × 99,784.08 - Step 4: Simplify right side
143,847.24x = 21,541,770,361.27 - Step 5: Solve for x
x = 21,541,770,361.27/143,847.24 - Step 6: Final answer
x = 149,754.49
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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.