Finding the Fourth Proportional to 135,704.64, 187,207.92 and 90,403.68
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Solution
The fourth proportional to 135,704.64, 187,207.92 and 90,403.68 is: 124,714.12
Step by Step Solution
- Step 1: Write the proportion equation
135,704.64 : 187,207.92 = 90,403.68 : x - Step 2: Convert to fraction form
135,704.64/187,207.92 = 90,403.68/x - Step 3: Cross multiply
135,704.64x = 187,207.92 × 90,403.68 - Step 4: Simplify right side
135,704.64x = 16,924,284,893.15 - Step 5: Solve for x
x = 16,924,284,893.15/135,704.64 - Step 6: Final answer
x = 124,714.12
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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.