Finding the Fourth Proportional to 112,247.64, 154,921.01 and 107,202.96
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Solution
The fourth proportional to 112,247.64, 154,921.01 and 107,202.96 is: 147,958.48
Step by Step Solution
- Step 1: Write the proportion equation
112,247.64 : 154,921.01 = 107,202.96 : x - Step 2: Convert to fraction form
112,247.64/154,921.01 = 107,202.96/x - Step 3: Cross multiply
112,247.64x = 154,921.01 × 107,202.96 - Step 4: Simplify right side
112,247.64x = 16,607,990,302.17 - Step 5: Solve for x
x = 16,607,990,302.17/112,247.64 - Step 6: Final answer
x = 147,958.48
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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.