Finding the Fourth Proportional to 208,115.06, 287,198.76 and 112,621.74
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Solution
The fourth proportional to 208,115.06, 287,198.76 and 112,621.74 is: 155,417.99
Step by Step Solution
- Step 1: Write the proportion equation
208,115.06 : 287,198.76 = 112,621.74 : x - Step 2: Convert to fraction form
208,115.06/287,198.76 = 112,621.74/x - Step 3: Cross multiply
208,115.06x = 287,198.76 × 112,621.74 - Step 4: Simplify right side
208,115.06x = 32,344,824,077.04 - Step 5: Solve for x
x = 32,344,824,077.04/208,115.06 - Step 6: Final answer
x = 155,417.99
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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.