Finding the Fourth Proportional to 128,767.26, 193,113.94 and 38,818.74
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Solution
The fourth proportional to 128,767.26, 193,113.94 and 38,818.74 is: 58,216.97
Step by Step Solution
- Step 1: Write the proportion equation
128,767.26 : 193,113.94 = 38,818.74 : x - Step 2: Convert to fraction form
128,767.26/193,113.94 = 38,818.74/x - Step 3: Cross multiply
128,767.26x = 193,113.94 × 38,818.74 - Step 4: Simplify right side
128,767.26x = 7,496,439,827.24 - Step 5: Solve for x
x = 7,496,439,827.24/128,767.26 - Step 6: Final answer
x = 58,216.97
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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.