Finding the Fourth Proportional to 115,613.75, 173,303.16 and 78,178.08
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Solution
The fourth proportional to 115,613.75, 173,303.16 and 78,178.08 is: 117,187.69
Step by Step Solution
- Step 1: Write the proportion equation
115,613.75 : 173,303.16 = 78,178.08 : x - Step 2: Convert to fraction form
115,613.75/173,303.16 = 78,178.08/x - Step 3: Cross multiply
115,613.75x = 173,303.16 × 78,178.08 - Step 4: Simplify right side
115,613.75x = 13,548,508,306.73 - Step 5: Solve for x
x = 13,548,508,306.73/115,613.75 - Step 6: Final answer
x = 117,187.69
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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.