Finding the Fourth Proportional to 133,129.10, 183,731.42 and 79,414.09
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Solution
The fourth proportional to 133,129.10, 183,731.42 and 79,414.09 is: 109,599.35
Step by Step Solution
- Step 1: Write the proportion equation
133,129.10 : 183,731.42 = 79,414.09 : x - Step 2: Convert to fraction form
133,129.10/183,731.42 = 79,414.09/x - Step 3: Cross multiply
133,129.10x = 183,731.42 × 79,414.09 - Step 4: Simplify right side
133,129.10x = 14,590,863,262.91 - Step 5: Solve for x
x = 14,590,863,262.91/133,129.10 - Step 6: Final answer
x = 109,599.35
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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.