Finding the Fourth Proportional to 154,203.99, 212,860.22 and 100,502.07
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Solution
The fourth proportional to 154,203.99, 212,860.22 and 100,502.07 is: 138,731.12
Step by Step Solution
- Step 1: Write the proportion equation
154,203.99 : 212,860.22 = 100,502.07 : x - Step 2: Convert to fraction form
154,203.99/212,860.22 = 100,502.07/x - Step 3: Cross multiply
154,203.99x = 212,860.22 × 100,502.07 - Step 4: Simplify right side
154,203.99x = 21,392,891,917.61 - Step 5: Solve for x
x = 21,392,891,917.61/154,203.99 - Step 6: Final answer
x = 138,731.12
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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.