Finding the Fourth Proportional to 92,213.80, 138,320.70 and 57,221.80
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Solution
The fourth proportional to 92,213.80, 138,320.70 and 57,221.80 is: 85,832.70
Step by Step Solution
- Step 1: Write the proportion equation
92,213.80 : 138,320.70 = 57,221.80 : x - Step 2: Convert to fraction form
92,213.80/138,320.70 = 57,221.80/x - Step 3: Cross multiply
92,213.80x = 138,320.70 × 57,221.80 - Step 4: Simplify right side
92,213.80x = 7,914,959,431.26 - Step 5: Solve for x
x = 7,914,959,431.26/92,213.80 - Step 6: Final answer
x = 85,832.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.