Finding the Fourth Proportional to 189,813.98, 261,971.62 and 109,235.79
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Solution
The fourth proportional to 189,813.98, 261,971.62 and 109,235.79 is: 150,761.69
Step by Step Solution
- Step 1: Write the proportion equation
189,813.98 : 261,971.62 = 109,235.79 : x - Step 2: Convert to fraction form
189,813.98/261,971.62 = 109,235.79/x - Step 3: Cross multiply
189,813.98x = 261,971.62 × 109,235.79 - Step 4: Simplify right side
189,813.98x = 28,616,676,595.19 - Step 5: Solve for x
x = 28,616,676,595.19/189,813.98 - Step 6: Final answer
x = 150,761.69
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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.