Finding the Fourth Proportional to 135,889.44, 203,726.88 and 85,863.96
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Solution
The fourth proportional to 135,889.44, 203,726.88 and 85,863.96 is: 128,728.15
Step by Step Solution
- Step 1: Write the proportion equation
135,889.44 : 203,726.88 = 85,863.96 : x - Step 2: Convert to fraction form
135,889.44/203,726.88 = 85,863.96/x - Step 3: Cross multiply
135,889.44x = 203,726.88 × 85,863.96 - Step 4: Simplify right side
135,889.44x = 17,492,796,675.24 - Step 5: Solve for x
x = 17,492,796,675.24/135,889.44 - Step 6: Final answer
x = 128,728.15
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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.