Finding the Fourth Proportional to 102,790.14, 141,874.08 and 66,917.66
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Solution
The fourth proportional to 102,790.14, 141,874.08 and 66,917.66 is: 92,361.79
Step by Step Solution
- Step 1: Write the proportion equation
102,790.14 : 141,874.08 = 66,917.66 : x - Step 2: Convert to fraction form
102,790.14/141,874.08 = 66,917.66/x - Step 3: Cross multiply
102,790.14x = 141,874.08 × 66,917.66 - Step 4: Simplify right side
102,790.14x = 9,493,881,448.25 - Step 5: Solve for x
x = 9,493,881,448.25/102,790.14 - Step 6: Final answer
x = 92,361.79
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.