Finding the Fourth Proportional to 126,458.08, 189,738.12 and 56,289.40
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Solution
The fourth proportional to 126,458.08, 189,738.12 and 56,289.40 is: 84,456.80
Step by Step Solution
- Step 1: Write the proportion equation
126,458.08 : 189,738.12 = 56,289.40 : x - Step 2: Convert to fraction form
126,458.08/189,738.12 = 56,289.40/x - Step 3: Cross multiply
126,458.08x = 189,738.12 × 56,289.40 - Step 4: Simplify right side
126,458.08x = 10,680,244,931.93 - Step 5: Solve for x
x = 10,680,244,931.93/126,458.08 - Step 6: Final answer
x = 84,456.80
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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.