Finding the Fourth Proportional to 133,138.30, 183,729.88 and 72,708.92
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Solution
The fourth proportional to 133,138.30, 183,729.88 and 72,708.92 is: 100,337.79
Step by Step Solution
- Step 1: Write the proportion equation
133,138.30 : 183,729.88 = 72,708.92 : x - Step 2: Convert to fraction form
133,138.30/183,729.88 = 72,708.92/x - Step 3: Cross multiply
133,138.30x = 183,729.88 × 72,708.92 - Step 4: Simplify right side
133,138.30x = 13,358,802,143.48 - Step 5: Solve for x
x = 13,358,802,143.48/133,138.30 - Step 6: Final answer
x = 100,337.79
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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.