Finding the Fourth Proportional to 189,841.24, 261,977.70 and 135,493.48
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Solution
The fourth proportional to 189,841.24, 261,977.70 and 135,493.48 is: 186,978.71
Step by Step Solution
- Step 1: Write the proportion equation
189,841.24 : 261,977.70 = 135,493.48 : x - Step 2: Convert to fraction form
189,841.24/261,977.70 = 135,493.48/x - Step 3: Cross multiply
189,841.24x = 261,977.70 × 135,493.48 - Step 4: Simplify right side
189,841.24x = 35,496,270,255.40 - Step 5: Solve for x
x = 35,496,270,255.40/189,841.24 - Step 6: Final answer
x = 186,978.71
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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.