Finding the Fourth Proportional to 100,214.97, 138,297.80 and 57,200.26
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Solution
The fourth proportional to 100,214.97, 138,297.80 and 57,200.26 is: 78,937.01
Step by Step Solution
- Step 1: Write the proportion equation
100,214.97 : 138,297.80 = 57,200.26 : x - Step 2: Convert to fraction form
100,214.97/138,297.80 = 57,200.26/x - Step 3: Cross multiply
100,214.97x = 138,297.80 × 57,200.26 - Step 4: Simplify right side
100,214.97x = 7,910,669,852.24 - Step 5: Solve for x
x = 7,910,669,852.24/100,214.97 - Step 6: Final answer
x = 78,937.01
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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.