Finding the Fourth Proportional to 138,696.05, 191,349.19 and 102,484.80
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Solution
The fourth proportional to 138,696.05, 191,349.19 and 102,484.80 is: 141,391.07
Step by Step Solution
- Step 1: Write the proportion equation
138,696.05 : 191,349.19 = 102,484.80 : x - Step 2: Convert to fraction form
138,696.05/191,349.19 = 102,484.80/x - Step 3: Cross multiply
138,696.05x = 191,349.19 × 102,484.80 - Step 4: Simplify right side
138,696.05x = 19,610,383,211.10 - Step 5: Solve for x
x = 19,610,383,211.10/138,696.05 - Step 6: Final answer
x = 141,391.07
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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.