Finding the Fourth Proportional to 139,844.48, 192,985.11 and 76,182.26
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Solution
The fourth proportional to 139,844.48, 192,985.11 and 76,182.26 is: 105,131.37
Step by Step Solution
- Step 1: Write the proportion equation
139,844.48 : 192,985.11 = 76,182.26 : x - Step 2: Convert to fraction form
139,844.48/192,985.11 = 76,182.26/x - Step 3: Cross multiply
139,844.48x = 192,985.11 × 76,182.26 - Step 4: Simplify right side
139,844.48x = 14,702,040,861.22 - Step 5: Solve for x
x = 14,702,040,861.22/139,844.48 - Step 6: Final answer
x = 105,131.37
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.