Finding the Fourth Proportional to 115,021.44, 157,694.40 and 112,921.92
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Solution
The fourth proportional to 115,021.44, 157,694.40 and 112,921.92 is: 154,815.96
Step by Step Solution
- Step 1: Write the proportion equation
115,021.44 : 157,694.40 = 112,921.92 : x - Step 2: Convert to fraction form
115,021.44/157,694.40 = 112,921.92/x - Step 3: Cross multiply
115,021.44x = 157,694.40 × 112,921.92 - Step 4: Simplify right side
115,021.44x = 17,807,154,421.25 - Step 5: Solve for x
x = 17,807,154,421.25/115,021.44 - Step 6: Final answer
x = 154,815.96
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.