Finding the Fourth Proportional to 126,143.64, 189,197.19 and 40,743.09
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Solution
The fourth proportional to 126,143.64, 189,197.19 and 40,743.09 is: 61,108.73
Step by Step Solution
- Step 1: Write the proportion equation
126,143.64 : 189,197.19 = 40,743.09 : x - Step 2: Convert to fraction form
126,143.64/189,197.19 = 40,743.09/x - Step 3: Cross multiply
126,143.64x = 189,197.19 × 40,743.09 - Step 4: Simplify right side
126,143.64x = 7,708,478,139.92 - Step 5: Solve for x
x = 7,708,478,139.92/126,143.64 - Step 6: Final answer
x = 61,108.73
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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.