Finding the Fourth Proportional to 203,909.80, 305,864.70 and 70,745.80
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Solution
The fourth proportional to 203,909.80, 305,864.70 and 70,745.80 is: 106,118.70
Step by Step Solution
- Step 1: Write the proportion equation
203,909.80 : 305,864.70 = 70,745.80 : x - Step 2: Convert to fraction form
203,909.80/305,864.70 = 70,745.80/x - Step 3: Cross multiply
203,909.80x = 305,864.70 × 70,745.80 - Step 4: Simplify right side
203,909.80x = 21,638,642,893.26 - Step 5: Solve for x
x = 21,638,642,893.26/203,909.80 - Step 6: Final answer
x = 106,118.70
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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.