Finding the Fourth Proportional to 138,573.62, 191,231.52 and 74,911.54
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Solution
The fourth proportional to 138,573.62, 191,231.52 and 74,911.54 is: 103,377.88
Step by Step Solution
- Step 1: Write the proportion equation
138,573.62 : 191,231.52 = 74,911.54 : x - Step 2: Convert to fraction form
138,573.62/191,231.52 = 74,911.54/x - Step 3: Cross multiply
138,573.62x = 191,231.52 × 74,911.54 - Step 4: Simplify right side
138,573.62x = 14,325,447,659.74 - Step 5: Solve for x
x = 14,325,447,659.74/138,573.62 - Step 6: Final answer
x = 103,377.88
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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.