Finding the Fourth Proportional to 100,341.63, 138,473.01 and 55,023.75
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Solution
The fourth proportional to 100,341.63, 138,473.01 and 55,023.75 is: 75,933.63
Step by Step Solution
- Step 1: Write the proportion equation
100,341.63 : 138,473.01 = 55,023.75 : x - Step 2: Convert to fraction form
100,341.63/138,473.01 = 55,023.75/x - Step 3: Cross multiply
100,341.63x = 138,473.01 × 55,023.75 - Step 4: Simplify right side
100,341.63x = 7,619,304,283.99 - Step 5: Solve for x
x = 7,619,304,283.99/100,341.63 - Step 6: Final answer
x = 75,933.63
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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.