Finding the Fourth Proportional to 231,154.24, 318,994.02 and 129,181.40
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Solution
The fourth proportional to 231,154.24, 318,994.02 and 129,181.40 is: 178,270.99
Step by Step Solution
- Step 1: Write the proportion equation
231,154.24 : 318,994.02 = 129,181.40 : x - Step 2: Convert to fraction form
231,154.24/318,994.02 = 129,181.40/x - Step 3: Cross multiply
231,154.24x = 318,994.02 × 129,181.40 - Step 4: Simplify right side
231,154.24x = 41,208,094,732.69 - Step 5: Solve for x
x = 41,208,094,732.69/231,154.24 - Step 6: Final answer
x = 178,270.99
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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.