Finding the Fourth Proportional to 155,905.92, 215,149.20 and 84,286.08
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Solution
The fourth proportional to 155,905.92, 215,149.20 and 84,286.08 is: 116,314.27
Step by Step Solution
- Step 1: Write the proportion equation
155,905.92 : 215,149.20 = 84,286.08 : x - Step 2: Convert to fraction form
155,905.92/215,149.20 = 84,286.08/x - Step 3: Cross multiply
155,905.92x = 215,149.20 × 84,286.08 - Step 4: Simplify right side
155,905.92x = 18,134,082,683.14 - Step 5: Solve for x
x = 18,134,082,683.14/155,905.92 - Step 6: Final answer
x = 116,314.27
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.