Finding the Fourth Proportional to 126,515.60, 189,379.68 and 79,670.08
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Solution
The fourth proportional to 126,515.60, 189,379.68 and 79,670.08 is: 119,257.18
Step by Step Solution
- Step 1: Write the proportion equation
126,515.60 : 189,379.68 = 79,670.08 : x - Step 2: Convert to fraction form
126,515.60/189,379.68 = 79,670.08/x - Step 3: Cross multiply
126,515.60x = 189,379.68 × 79,670.08 - Step 4: Simplify right side
126,515.60x = 15,087,894,255.97 - Step 5: Solve for x
x = 15,087,894,255.97/126,515.60 - Step 6: Final answer
x = 119,257.18
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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.