Finding the Fourth Proportional to 156,391.44, 215,768.16 and 88,399.68
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Solution
The fourth proportional to 156,391.44, 215,768.16 and 88,399.68 is: 121,962.15
Step by Step Solution
- Step 1: Write the proportion equation
156,391.44 : 215,768.16 = 88,399.68 : x - Step 2: Convert to fraction form
156,391.44/215,768.16 = 88,399.68/x - Step 3: Cross multiply
156,391.44x = 215,768.16 × 88,399.68 - Step 4: Simplify right side
156,391.44x = 19,073,836,298.19 - Step 5: Solve for x
x = 19,073,836,298.19/156,391.44 - Step 6: Final answer
x = 121,962.15
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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.