Finding the Fourth Proportional to 68,103.75, 102,155.63 and 18,855.75
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Solution
The fourth proportional to 68,103.75, 102,155.63 and 18,855.75 is: 28,283.63
Step by Step Solution
- Step 1: Write the proportion equation
68,103.75 : 102,155.63 = 18,855.75 : x - Step 2: Convert to fraction form
68,103.75/102,155.63 = 18,855.75/x - Step 3: Cross multiply
68,103.75x = 102,155.63 × 18,855.75 - Step 4: Simplify right side
68,103.75x = 1,926,220,926.09 - Step 5: Solve for x
x = 1,926,220,926.09/68,103.75 - Step 6: Final answer
x = 28,283.63
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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.