Finding the Fourth Proportional to 120,294.42, 180,503.85 and 87,286.62
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Solution
The fourth proportional to 120,294.42, 180,503.85 and 87,286.62 is: 130,975.08
Step by Step Solution
- Step 1: Write the proportion equation
120,294.42 : 180,503.85 = 87,286.62 : x - Step 2: Convert to fraction form
120,294.42/180,503.85 = 87,286.62/x - Step 3: Cross multiply
120,294.42x = 180,503.85 × 87,286.62 - Step 4: Simplify right side
120,294.42x = 15,755,570,963.49 - Step 5: Solve for x
x = 15,755,570,963.49/120,294.42 - Step 6: Final answer
x = 130,975.08
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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.