Finding the Fourth Proportional to 138,613.44, 191,285.64 and 74,950.95
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Solution
The fourth proportional to 138,613.44, 191,285.64 and 74,950.95 is: 103,431.82
Step by Step Solution
- Step 1: Write the proportion equation
138,613.44 : 191,285.64 = 74,950.95 : x - Step 2: Convert to fraction form
138,613.44/191,285.64 = 74,950.95/x - Step 3: Cross multiply
138,613.44x = 191,285.64 × 74,950.95 - Step 4: Simplify right side
138,613.44x = 14,337,040,439.36 - Step 5: Solve for x
x = 14,337,040,439.36/138,613.44 - Step 6: Final answer
x = 103,431.82
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1.5x scale
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.