Finding the Fourth Proportional to 213,138.05, 294,130.53 and 117,644.78
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Solution
The fourth proportional to 213,138.05, 294,130.53 and 117,644.78 is: 162,349.80
Step by Step Solution
- Step 1: Write the proportion equation
213,138.05 : 294,130.53 = 117,644.78 : x - Step 2: Convert to fraction form
213,138.05/294,130.53 = 117,644.78/x - Step 3: Cross multiply
213,138.05x = 294,130.53 × 117,644.78 - Step 4: Simplify right side
213,138.05x = 34,602,920,022.48 - Step 5: Solve for x
x = 34,602,920,022.48/213,138.05 - Step 6: Final answer
x = 162,349.80
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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.