Finding the Fourth Proportional to 156,213.05, 215,574.21 and 84,593.18
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Solution
The fourth proportional to 156,213.05, 215,574.21 and 84,593.18 is: 116,738.70
Step by Step Solution
- Step 1: Write the proportion equation
156,213.05 : 215,574.21 = 84,593.18 : x - Step 2: Convert to fraction form
156,213.05/215,574.21 = 84,593.18/x - Step 3: Cross multiply
156,213.05x = 215,574.21 × 84,593.18 - Step 4: Simplify right side
156,213.05x = 18,236,108,488.82 - Step 5: Solve for x
x = 18,236,108,488.82/156,213.05 - Step 6: Final answer
x = 116,738.70
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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.