Finding the Fourth Proportional to 138,750.60, 191,475.12 and 75,087.84
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Solution
The fourth proportional to 138,750.60, 191,475.12 and 75,087.84 is: 103,620.84
Step by Step Solution
- Step 1: Write the proportion equation
138,750.60 : 191,475.12 = 75,087.84 : x - Step 2: Convert to fraction form
138,750.60/191,475.12 = 75,087.84/x - Step 3: Cross multiply
138,750.60x = 191,475.12 × 75,087.84 - Step 4: Simplify right side
138,750.60x = 14,377,453,174.54 - Step 5: Solve for x
x = 14,377,453,174.54/138,750.60 - Step 6: Final answer
x = 103,620.84
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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.