Finding the Fourth Proportional to 138,859.96, 191,626.36 and 75,197.74
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Solution
The fourth proportional to 138,859.96, 191,626.36 and 75,197.74 is: 103,772.67
Step by Step Solution
- Step 1: Write the proportion equation
138,859.96 : 191,626.36 = 75,197.74 : x - Step 2: Convert to fraction form
138,859.96/191,626.36 = 75,197.74/x - Step 3: Cross multiply
138,859.96x = 191,626.36 × 75,197.74 - Step 4: Simplify right side
138,859.96x = 14,409,867,862.31 - Step 5: Solve for x
x = 14,409,867,862.31/138,859.96 - Step 6: Final answer
x = 103,772.67
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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.