Finding the Fourth Proportional to 151,784.64, 209,455.20 and 84,703.68
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Solution
The fourth proportional to 151,784.64, 209,455.20 and 84,703.68 is: 116,886.84
Step by Step Solution
- Step 1: Write the proportion equation
151,784.64 : 209,455.20 = 84,703.68 : x - Step 2: Convert to fraction form
151,784.64/209,455.20 = 84,703.68/x - Step 3: Cross multiply
151,784.64x = 209,455.20 × 84,703.68 - Step 4: Simplify right side
151,784.64x = 17,741,626,235.14 - Step 5: Solve for x
x = 17,741,626,235.14/151,784.64 - Step 6: Final answer
x = 116,886.84
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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.