Finding the Fourth Proportional to 126,619.68, 174,769.68 and 78,844.80
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Solution
The fourth proportional to 126,619.68, 174,769.68 and 78,844.80 is: 108,827.32
Step by Step Solution
- Step 1: Write the proportion equation
126,619.68 : 174,769.68 = 78,844.80 : x - Step 2: Convert to fraction form
126,619.68/174,769.68 = 78,844.80/x - Step 3: Cross multiply
126,619.68x = 174,769.68 × 78,844.80 - Step 4: Simplify right side
126,619.68x = 13,779,680,465.66 - Step 5: Solve for x
x = 13,779,680,465.66/126,619.68 - Step 6: Final answer
x = 108,827.32
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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.