Finding the Fourth Proportional to 115,427.20, 173,140.80 and 115,427.20
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Solution
The fourth proportional to 115,427.20, 173,140.80 and 115,427.20 is: 173,140.80
Step by Step Solution
- Step 1: Write the proportion equation
115,427.20 : 173,140.80 = 115,427.20 : x - Step 2: Convert to fraction form
115,427.20/173,140.80 = 115,427.20/x - Step 3: Cross multiply
115,427.20x = 173,140.80 × 115,427.20 - Step 4: Simplify right side
115,427.20x = 19,985,157,749.76 - Step 5: Solve for x
x = 19,985,157,749.76/115,427.20 - Step 6: Final answer
x = 173,140.80
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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.