Finding the Fourth Proportional to 151,816.75, 209,507.12 and 84,748.75
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Solution
The fourth proportional to 151,816.75, 209,507.12 and 84,748.75 is: 116,953.28
Step by Step Solution
- Step 1: Write the proportion equation
151,816.75 : 209,507.12 = 84,748.75 : x - Step 2: Convert to fraction form
151,816.75/209,507.12 = 84,748.75/x - Step 3: Cross multiply
151,816.75x = 209,507.12 × 84,748.75 - Step 4: Simplify right side
151,816.75x = 17,755,466,536.10 - Step 5: Solve for x
x = 17,755,466,536.10/151,816.75 - Step 6: Final answer
x = 116,953.28
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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.