Finding the Fourth Proportional to 201,574.63, 278,115.28 and 129,995.74
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Solution
The fourth proportional to 201,574.63, 278,115.28 and 129,995.74 is: 179,356.90
Step by Step Solution
- Step 1: Write the proportion equation
201,574.63 : 278,115.28 = 129,995.74 : x - Step 2: Convert to fraction form
201,574.63/278,115.28 = 129,995.74/x - Step 3: Cross multiply
201,574.63x = 278,115.28 × 129,995.74 - Step 4: Simplify right side
201,574.63x = 36,153,801,628.91 - Step 5: Solve for x
x = 36,153,801,628.91/201,574.63 - Step 6: Final answer
x = 179,356.90
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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.