Finding the Fourth Proportional to 125,138.18, 187,705.69 and 30,369.14
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Solution
The fourth proportional to 125,138.18, 187,705.69 and 30,369.14 is: 45,553.33
Step by Step Solution
- Step 1: Write the proportion equation
125,138.18 : 187,705.69 = 30,369.14 : x - Step 2: Convert to fraction form
125,138.18/187,705.69 = 30,369.14/x - Step 3: Cross multiply
125,138.18x = 187,705.69 × 30,369.14 - Step 4: Simplify right side
125,138.18x = 5,700,460,771.75 - Step 5: Solve for x
x = 5,700,460,771.75/125,138.18 - Step 6: Final answer
x = 45,553.33
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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.