Finding the Fourth Proportional to 212,630.74, 319,143.75 and 107,525.14
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Solution
The fourth proportional to 212,630.74, 319,143.75 and 107,525.14 is: 161,387.65
Step by Step Solution
- Step 1: Write the proportion equation
212,630.74 : 319,143.75 = 107,525.14 : x - Step 2: Convert to fraction form
212,630.74/319,143.75 = 107,525.14/x - Step 3: Cross multiply
212,630.74x = 319,143.75 × 107,525.14 - Step 4: Simplify right side
212,630.74x = 34,315,976,398.88 - Step 5: Solve for x
x = 34,315,976,398.88/212,630.74 - Step 6: Final answer
x = 161,387.65
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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.