Finding the Fourth Proportional to 129,612.13, 178,864.73 and 69,996.13
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Solution
The fourth proportional to 129,612.13, 178,864.73 and 69,996.13 is: 96,594.65
Step by Step Solution
- Step 1: Write the proportion equation
129,612.13 : 178,864.73 = 69,996.13 : x - Step 2: Convert to fraction form
129,612.13/178,864.73 = 69,996.13/x - Step 3: Cross multiply
129,612.13x = 178,864.73 × 69,996.13 - Step 4: Simplify right side
129,612.13x = 12,519,838,893.49 - Step 5: Solve for x
x = 12,519,838,893.49/129,612.13 - Step 6: Final answer
x = 96,594.65
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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.