Finding the Fourth Proportional to 138,325.66, 189,645.20 and 135,803.79
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Solution
The fourth proportional to 138,325.66, 189,645.20 and 135,803.79 is: 186,187.71
Step by Step Solution
- Step 1: Write the proportion equation
138,325.66 : 189,645.20 = 135,803.79 : x - Step 2: Convert to fraction form
138,325.66/189,645.20 = 135,803.79/x - Step 3: Cross multiply
138,325.66x = 189,645.20 × 135,803.79 - Step 4: Simplify right side
138,325.66x = 25,754,536,745.55 - Step 5: Solve for x
x = 25,754,536,745.55/138,325.66 - Step 6: Final answer
x = 186,187.71
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.