Finding the Fourth Proportional to 151,753.44, 209,431.35 and 83,783.55
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Solution
The fourth proportional to 151,753.44, 209,431.35 and 83,783.55 is: 115,627.70
Step by Step Solution
- Step 1: Write the proportion equation
151,753.44 : 209,431.35 = 83,783.55 : x - Step 2: Convert to fraction form
151,753.44/209,431.35 = 83,783.55/x - Step 3: Cross multiply
151,753.44x = 209,431.35 × 83,783.55 - Step 4: Simplify right side
151,753.44x = 17,546,901,984.29 - Step 5: Solve for x
x = 17,546,901,984.29/151,753.44 - Step 6: Final answer
x = 115,627.70
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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.