Finding the Fourth Proportional to 100,577.99, 138,797.05 and 55,254.99
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Solution
The fourth proportional to 100,577.99, 138,797.05 and 55,254.99 is: 76,251.57
Step by Step Solution
- Step 1: Write the proportion equation
100,577.99 : 138,797.05 = 55,254.99 : x - Step 2: Convert to fraction form
100,577.99/138,797.05 = 55,254.99/x - Step 3: Cross multiply
100,577.99x = 138,797.05 × 55,254.99 - Step 4: Simplify right side
100,577.99x = 7,669,229,333.50 - Step 5: Solve for x
x = 7,669,229,333.50/100,577.99 - Step 6: Final answer
x = 76,251.57
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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.