Finding the Fourth Proportional to 178,972.80, 246,873.60 and 128,739.84
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Solution
The fourth proportional to 178,972.80, 246,873.60 and 128,739.84 is: 177,582.67
Step by Step Solution
- Step 1: Write the proportion equation
178,972.80 : 246,873.60 = 128,739.84 : x - Step 2: Convert to fraction form
178,972.80/246,873.60 = 128,739.84/x - Step 3: Cross multiply
178,972.80x = 246,873.60 × 128,739.84 - Step 4: Simplify right side
178,972.80x = 31,782,467,764.22 - Step 5: Solve for x
x = 31,782,467,764.22/178,972.80 - Step 6: Final answer
x = 177,582.67
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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.