Finding the Fourth Proportional to 103,837.10, 155,755.65 and 68,407.70
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Solution
The fourth proportional to 103,837.10, 155,755.65 and 68,407.70 is: 102,611.55
Step by Step Solution
- Step 1: Write the proportion equation
103,837.10 : 155,755.65 = 68,407.70 : x - Step 2: Convert to fraction form
103,837.10/155,755.65 = 68,407.70/x - Step 3: Cross multiply
103,837.10x = 155,755.65 × 68,407.70 - Step 4: Simplify right side
103,837.10x = 10,654,885,778.51 - Step 5: Solve for x
x = 10,654,885,778.51/103,837.10 - Step 6: Final answer
x = 102,611.55
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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.