Finding the Fourth Proportional to 100,347.26, 138,483.42 and 55,026.99
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Solution
The fourth proportional to 100,347.26, 138,483.42 and 55,026.99 is: 75,939.54
Step by Step Solution
- Step 1: Write the proportion equation
100,347.26 : 138,483.42 = 55,026.99 : x - Step 2: Convert to fraction form
100,347.26/138,483.42 = 55,026.99/x - Step 3: Cross multiply
100,347.26x = 138,483.42 × 55,026.99 - Step 4: Simplify right side
100,347.26x = 7,620,325,054.31 - Step 5: Solve for x
x = 7,620,325,054.31/100,347.26 - Step 6: Final answer
x = 75,939.54
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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.