Finding the Fourth Proportional to 125,255.20, 172,840.08 and 74,953.12
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Solution
The fourth proportional to 125,255.20, 172,840.08 and 74,953.12 is: 103,428.07
Step by Step Solution
- Step 1: Write the proportion equation
125,255.20 : 172,840.08 = 74,953.12 : x - Step 2: Convert to fraction form
125,255.20/172,840.08 = 74,953.12/x - Step 3: Cross multiply
125,255.20x = 172,840.08 × 74,953.12 - Step 4: Simplify right side
125,255.20x = 12,954,903,257.05 - Step 5: Solve for x
x = 12,954,903,257.05/125,255.20 - Step 6: Final answer
x = 103,428.07
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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.