Finding the Fourth Proportional to 153,896.78, 212,465.91 and 117,311.02
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Solution
The fourth proportional to 153,896.78, 212,465.91 and 117,311.02 is: 161,956.56
Step by Step Solution
- Step 1: Write the proportion equation
153,896.78 : 212,465.91 = 117,311.02 : x - Step 2: Convert to fraction form
153,896.78/212,465.91 = 117,311.02/x - Step 3: Cross multiply
153,896.78x = 212,465.91 × 117,311.02 - Step 4: Simplify right side
153,896.78x = 24,924,592,617.33 - Step 5: Solve for x
x = 24,924,592,617.33/153,896.78 - Step 6: Final answer
x = 161,956.56
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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.