Finding the Fourth Proportional to 135,468.09, 186,947.46 and 75,039.66
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Solution
The fourth proportional to 135,468.09, 186,947.46 and 75,039.66 is: 103,555.56
Step by Step Solution
- Step 1: Write the proportion equation
135,468.09 : 186,947.46 = 75,039.66 : x - Step 2: Convert to fraction form
135,468.09/186,947.46 = 75,039.66/x - Step 3: Cross multiply
135,468.09x = 186,947.46 × 75,039.66 - Step 4: Simplify right side
135,468.09x = 14,028,473,836.26 - Step 5: Solve for x
x = 14,028,473,836.26/135,468.09 - Step 6: Final answer
x = 103,555.56
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1.5x scale
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.