Finding the Fourth Proportional to 135,905.80, 203,858.70 and 127,157.80
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Solution
The fourth proportional to 135,905.80, 203,858.70 and 127,157.80 is: 190,736.70
Step by Step Solution
- Step 1: Write the proportion equation
135,905.80 : 203,858.70 = 127,157.80 : x - Step 2: Convert to fraction form
135,905.80/203,858.70 = 127,157.80/x - Step 3: Cross multiply
135,905.80x = 203,858.70 × 127,157.80 - Step 4: Simplify right side
135,905.80x = 25,922,223,802.86 - Step 5: Solve for x
x = 25,922,223,802.86/135,905.80 - Step 6: Final answer
x = 190,736.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.