Finding the Fourth Proportional to 129,590.28, 178,833.79 and 73,019.88
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Solution
The fourth proportional to 129,590.28, 178,833.79 and 73,019.88 is: 100,766.99
Step by Step Solution
- Step 1: Write the proportion equation
129,590.28 : 178,833.79 = 73,019.88 : x - Step 2: Convert to fraction form
129,590.28/178,833.79 = 73,019.88/x - Step 3: Cross multiply
129,590.28x = 178,833.79 × 73,019.88 - Step 4: Simplify right side
129,590.28x = 13,058,421,885.75 - Step 5: Solve for x
x = 13,058,421,885.75/129,590.28 - Step 6: Final answer
x = 100,766.99
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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.