Finding the Fourth Proportional to 103,946.21, 155,850.20 and 57,221.09
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Solution
The fourth proportional to 103,946.21, 155,850.20 and 57,221.09 is: 85,793.59
Step by Step Solution
- Step 1: Write the proportion equation
103,946.21 : 155,850.20 = 57,221.09 : x - Step 2: Convert to fraction form
103,946.21/155,850.20 = 57,221.09/x - Step 3: Cross multiply
103,946.21x = 155,850.20 × 57,221.09 - Step 4: Simplify right side
103,946.21x = 8,917,918,034.61 - Step 5: Solve for x
x = 8,917,918,034.61/103,946.21 - Step 6: Final answer
x = 85,793.59
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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.