Finding the Fourth Proportional to 159,178.13, 219,553.42 and 135,139.35
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Solution
The fourth proportional to 159,178.13, 219,553.42 and 135,139.35 is: 186,396.88
Step by Step Solution
- Step 1: Write the proportion equation
159,178.13 : 219,553.42 = 135,139.35 : x - Step 2: Convert to fraction form
159,178.13/219,553.42 = 135,139.35/x - Step 3: Cross multiply
159,178.13x = 219,553.42 × 135,139.35 - Step 4: Simplify right side
159,178.13x = 29,670,306,469.08 - Step 5: Solve for x
x = 29,670,306,469.08/159,178.13 - Step 6: Final answer
x = 186,396.88
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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.