Finding the Fourth Proportional to 142,752.11, 214,225.05 and 76,239.97
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Solution
The fourth proportional to 142,752.11, 214,225.05 and 76,239.97 is: 114,411.70
Step by Step Solution
- Step 1: Write the proportion equation
142,752.11 : 214,225.05 = 76,239.97 : x - Step 2: Convert to fraction form
142,752.11/214,225.05 = 76,239.97/x - Step 3: Cross multiply
142,752.11x = 214,225.05 × 76,239.97 - Step 4: Simplify right side
142,752.11x = 16,332,511,135.59 - Step 5: Solve for x
x = 16,332,511,135.59/142,752.11 - Step 6: Final answer
x = 114,411.70
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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.