Finding the Fourth Proportional to 112,157.87, 154,794.65 and 71,917.07
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Solution
The fourth proportional to 112,157.87, 154,794.65 and 71,917.07 is: 99,256.32
Step by Step Solution
- Step 1: Write the proportion equation
112,157.87 : 154,794.65 = 71,917.07 : x - Step 2: Convert to fraction form
112,157.87/154,794.65 = 71,917.07/x - Step 3: Cross multiply
112,157.87x = 154,794.65 × 71,917.07 - Step 4: Simplify right side
112,157.87x = 11,132,376,546.12 - Step 5: Solve for x
x = 11,132,376,546.12/112,157.87 - Step 6: Final answer
x = 99,256.32
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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.