Finding the Fourth Proportional to 139,972.24, 193,163.70 and 76,313.26
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Solution
The fourth proportional to 139,972.24, 193,163.70 and 76,313.26 is: 105,313.39
Step by Step Solution
- Step 1: Write the proportion equation
139,972.24 : 193,163.70 = 76,313.26 : x - Step 2: Convert to fraction form
139,972.24/193,163.70 = 76,313.26/x - Step 3: Cross multiply
139,972.24x = 193,163.70 × 76,313.26 - Step 4: Simplify right side
139,972.24x = 14,740,951,660.66 - Step 5: Solve for x
x = 14,740,951,660.66/139,972.24 - Step 6: Final answer
x = 105,313.39
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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.