Finding the Fourth Proportional to 156,431.37, 215,873.99 and 88,461.69
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Solution
The fourth proportional to 156,431.37, 215,873.99 and 88,461.69 is: 122,076.39
Step by Step Solution
- Step 1: Write the proportion equation
156,431.37 : 215,873.99 = 88,461.69 : x - Step 2: Convert to fraction form
156,431.37/215,873.99 = 88,461.69/x - Step 3: Cross multiply
156,431.37x = 215,873.99 × 88,461.69 - Step 4: Simplify right side
156,431.37x = 19,096,577,540.13 - Step 5: Solve for x
x = 19,096,577,540.13/156,431.37 - Step 6: Final answer
x = 122,076.39
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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.