Finding the Fourth Proportional to 207,889.80, 286,887.90 and 112,396.44
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Solution
The fourth proportional to 207,889.80, 286,887.90 and 112,396.44 is: 155,107.07
Step by Step Solution
- Step 1: Write the proportion equation
207,889.80 : 286,887.90 = 112,396.44 : x - Step 2: Convert to fraction form
207,889.80/286,887.90 = 112,396.44/x - Step 3: Cross multiply
207,889.80x = 286,887.90 × 112,396.44 - Step 4: Simplify right side
207,889.80x = 32,245,178,639.08 - Step 5: Solve for x
x = 32,245,178,639.08/207,889.80 - Step 6: Final answer
x = 155,107.07
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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.