Finding the Fourth Proportional to 125,615.27, 173,378.88 and 71,931.11
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Solution
The fourth proportional to 125,615.27, 173,378.88 and 71,931.11 is: 99,281.99
Step by Step Solution
- Step 1: Write the proportion equation
125,615.27 : 173,378.88 = 71,931.11 : x - Step 2: Convert to fraction form
125,615.27/173,378.88 = 71,931.11/x - Step 3: Cross multiply
125,615.27x = 173,378.88 × 71,931.11 - Step 4: Simplify right side
125,615.27x = 12,471,334,422.06 - Step 5: Solve for x
x = 12,471,334,422.06/125,615.27 - Step 6: Final answer
x = 99,281.99
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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.