Finding the Fourth Proportional to 229,708.75, 316,998.09 and 129,106.75
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Solution
The fourth proportional to 229,708.75, 316,998.09 and 129,106.75 is: 178,167.32
Step by Step Solution
- Step 1: Write the proportion equation
229,708.75 : 316,998.09 = 129,106.75 : x - Step 2: Convert to fraction form
229,708.75/316,998.09 = 129,106.75/x - Step 3: Cross multiply
229,708.75x = 316,998.09 × 129,106.75 - Step 4: Simplify right side
229,708.75x = 40,926,593,156.11 - Step 5: Solve for x
x = 40,926,593,156.11/229,708.75 - Step 6: Final answer
x = 178,167.32
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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.