Finding the Fourth Proportional to 115,235.12, 172,859.52 and 32,129.12
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Solution
The fourth proportional to 115,235.12, 172,859.52 and 32,129.12 is: 48,195.59
Step by Step Solution
- Step 1: Write the proportion equation
115,235.12 : 172,859.52 = 32,129.12 : x - Step 2: Convert to fraction form
115,235.12/172,859.52 = 32,129.12/x - Step 3: Cross multiply
115,235.12x = 172,859.52 × 32,129.12 - Step 4: Simplify right side
115,235.12x = 5,553,824,261.22 - Step 5: Solve for x
x = 5,553,824,261.22/115,235.12 - Step 6: Final answer
x = 48,195.59
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.