Finding the Fourth Proportional to 126,699.38, 174,769.12 and 83,678.95
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Solution
The fourth proportional to 126,699.38, 174,769.12 and 83,678.95 is: 115,426.75
Step by Step Solution
- Step 1: Write the proportion equation
126,699.38 : 174,769.12 = 83,678.95 : x - Step 2: Convert to fraction form
126,699.38/174,769.12 = 83,678.95/x - Step 3: Cross multiply
126,699.38x = 174,769.12 × 83,678.95 - Step 4: Simplify right side
126,699.38x = 14,624,497,104.78 - Step 5: Solve for x
x = 14,624,497,104.78/126,699.38 - Step 6: Final answer
x = 115,426.75
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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.