Finding the Fourth Proportional to 136,129.60, 203,708.40 and 86,233.60
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Solution
The fourth proportional to 136,129.60, 203,708.40 and 86,233.60 is: 129,042.54
Step by Step Solution
- Step 1: Write the proportion equation
136,129.60 : 203,708.40 = 86,233.60 : x - Step 2: Convert to fraction form
136,129.60/203,708.40 = 86,233.60/x - Step 3: Cross multiply
136,129.60x = 203,708.40 × 86,233.60 - Step 4: Simplify right side
136,129.60x = 17,566,508,682.24 - Step 5: Solve for x
x = 17,566,508,682.24/136,129.60 - Step 6: Final answer
x = 129,042.54
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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.