Finding the Fourth Proportional to 252,115.80, 378,173.70 and 85,903.80
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Solution
The fourth proportional to 252,115.80, 378,173.70 and 85,903.80 is: 128,855.70
Step by Step Solution
- Step 1: Write the proportion equation
252,115.80 : 378,173.70 = 85,903.80 : x - Step 2: Convert to fraction form
252,115.80/378,173.70 = 85,903.80/x - Step 3: Cross multiply
252,115.80x = 378,173.70 × 85,903.80 - Step 4: Simplify right side
252,115.80x = 32,486,557,890.06 - Step 5: Solve for x
x = 32,486,557,890.06/252,115.80 - Step 6: Final answer
x = 128,855.70
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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.