Finding the Fourth Proportional to 141,683.19, 211,419.66 and 129,107.94
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Solution
The fourth proportional to 141,683.19, 211,419.66 and 129,107.94 is: 192,654.87
Step by Step Solution
- Step 1: Write the proportion equation
141,683.19 : 211,419.66 = 129,107.94 : x - Step 2: Convert to fraction form
141,683.19/211,419.66 = 129,107.94/x - Step 3: Cross multiply
141,683.19x = 211,419.66 × 129,107.94 - Step 4: Simplify right side
141,683.19x = 27,295,956,778.10 - Step 5: Solve for x
x = 27,295,956,778.10/141,683.19 - Step 6: Final answer
x = 192,654.87
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.