Finding the Fourth Proportional to 103,493.38, 155,207.67 and 68,618.02
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Solution
The fourth proportional to 103,493.38, 155,207.67 and 68,618.02 is: 102,905.55
Step by Step Solution
- Step 1: Write the proportion equation
103,493.38 : 155,207.67 = 68,618.02 : x - Step 2: Convert to fraction form
103,493.38/155,207.67 = 68,618.02/x - Step 3: Cross multiply
103,493.38x = 155,207.67 × 68,618.02 - Step 4: Simplify right side
103,493.38x = 10,650,043,004.21 - Step 5: Solve for x
x = 10,650,043,004.21/103,493.38 - Step 6: Final answer
x = 102,905.55
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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.