Finding the Fourth Proportional to 128,881.13, 193,337.48 and 40,120.52
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Solution
The fourth proportional to 128,881.13, 193,337.48 and 40,120.52 is: 60,185.69
Step by Step Solution
- Step 1: Write the proportion equation
128,881.13 : 193,337.48 = 40,120.52 : x - Step 2: Convert to fraction form
128,881.13/193,337.48 = 40,120.52/x - Step 3: Cross multiply
128,881.13x = 193,337.48 × 40,120.52 - Step 4: Simplify right side
128,881.13x = 7,756,799,366.70 - Step 5: Solve for x
x = 7,756,799,366.70/128,881.13 - Step 6: Final answer
x = 60,185.69
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.