Finding the Fourth Proportional to 141,063.14, 211,628.88 and 81,129.96
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Solution
The fourth proportional to 141,063.14, 211,628.88 and 81,129.96 is: 121,714.59
Step by Step Solution
- Step 1: Write the proportion equation
141,063.14 : 211,628.88 = 81,129.96 : x - Step 2: Convert to fraction form
141,063.14/211,628.88 = 81,129.96/x - Step 3: Cross multiply
141,063.14x = 211,628.88 × 81,129.96 - Step 4: Simplify right side
141,063.14x = 17,169,442,569.24 - Step 5: Solve for x
x = 17,169,442,569.24/141,063.14 - Step 6: Final answer
x = 121,714.59
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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.