Finding the Fourth Proportional to 136,645.74, 188,520.28 and 79,252.88
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Solution
The fourth proportional to 136,645.74, 188,520.28 and 79,252.88 is: 109,339.49
Step by Step Solution
- Step 1: Write the proportion equation
136,645.74 : 188,520.28 = 79,252.88 : x - Step 2: Convert to fraction form
136,645.74/188,520.28 = 79,252.88/x - Step 3: Cross multiply
136,645.74x = 188,520.28 × 79,252.88 - Step 4: Simplify right side
136,645.74x = 14,940,775,128.41 - Step 5: Solve for x
x = 14,940,775,128.41/136,645.74 - Step 6: Final answer
x = 109,339.49
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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.