Finding the Fourth Proportional to 212,979.78, 293,889.36 and 117,486.48
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Solution
The fourth proportional to 212,979.78, 293,889.36 and 117,486.48 is: 162,118.80
Step by Step Solution
- Step 1: Write the proportion equation
212,979.78 : 293,889.36 = 117,486.48 : x - Step 2: Convert to fraction form
212,979.78/293,889.36 = 117,486.48/x - Step 3: Cross multiply
212,979.78x = 293,889.36 × 117,486.48 - Step 4: Simplify right side
212,979.78x = 34,528,026,415.85 - Step 5: Solve for x
x = 34,528,026,415.85/212,979.78 - Step 6: Final answer
x = 162,118.80
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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.