Finding the Fourth Proportional to 100,101.13, 138,138.36 and 54,778.96
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Solution
The fourth proportional to 100,101.13, 138,138.36 and 54,778.96 is: 75,594.31
Step by Step Solution
- Step 1: Write the proportion equation
100,101.13 : 138,138.36 = 54,778.96 : x - Step 2: Convert to fraction form
100,101.13/138,138.36 = 54,778.96/x - Step 3: Cross multiply
100,101.13x = 138,138.36 × 54,778.96 - Step 4: Simplify right side
100,101.13x = 7,567,075,696.91 - Step 5: Solve for x
x = 7,567,075,696.91/100,101.13 - Step 6: Final answer
x = 75,594.31
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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.