Finding the Fourth Proportional to 129,721.60, 194,668.80 and 59,564.80
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Solution
The fourth proportional to 129,721.60, 194,668.80 and 59,564.80 is: 89,386.87
Step by Step Solution
- Step 1: Write the proportion equation
129,721.60 : 194,668.80 = 59,564.80 : x - Step 2: Convert to fraction form
129,721.60/194,668.80 = 59,564.80/x - Step 3: Cross multiply
129,721.60x = 194,668.80 × 59,564.80 - Step 4: Simplify right side
129,721.60x = 11,595,408,138.24 - Step 5: Solve for x
x = 11,595,408,138.24/129,721.60 - Step 6: Final answer
x = 89,386.87
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.