Finding the Fourth Proportional to 203,498.70, 305,248.05 and 85,157.70
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Solution
The fourth proportional to 203,498.70, 305,248.05 and 85,157.70 is: 127,736.55
Step by Step Solution
- Step 1: Write the proportion equation
203,498.70 : 305,248.05 = 85,157.70 : x - Step 2: Convert to fraction form
203,498.70/305,248.05 = 85,157.70/x - Step 3: Cross multiply
203,498.70x = 305,248.05 × 85,157.70 - Step 4: Simplify right side
203,498.70x = 25,994,221,867.49 - Step 5: Solve for x
x = 25,994,221,867.49/203,498.70 - Step 6: Final answer
x = 127,736.55
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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.