Finding the Fourth Proportional to 153,896.24, 212,350.50 and 85,909.70
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Solution
The fourth proportional to 153,896.24, 212,350.50 and 85,909.70 is: 118,540.70
Step by Step Solution
- Step 1: Write the proportion equation
153,896.24 : 212,350.50 = 85,909.70 : x - Step 2: Convert to fraction form
153,896.24/212,350.50 = 85,909.70/x - Step 3: Cross multiply
153,896.24x = 212,350.50 × 85,909.70 - Step 4: Simplify right side
153,896.24x = 18,242,967,749.85 - Step 5: Solve for x
x = 18,242,967,749.85/153,896.24 - Step 6: Final answer
x = 118,540.70
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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.