Finding the Fourth Proportional to 153,751.36, 212,067.84 and 99,937.12
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Solution
The fourth proportional to 153,751.36, 212,067.84 and 99,937.12 is: 137,842.35
Step by Step Solution
- Step 1: Write the proportion equation
153,751.36 : 212,067.84 = 99,937.12 : x - Step 2: Convert to fraction form
153,751.36/212,067.84 = 99,937.12/x - Step 3: Cross multiply
153,751.36x = 212,067.84 × 99,937.12 - Step 4: Simplify right side
153,751.36x = 21,193,449,174.22 - Step 5: Solve for x
x = 21,193,449,174.22/153,751.36 - Step 6: Final answer
x = 137,842.35
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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.