Finding the Fourth Proportional to 129,352.53, 178,506.54 and 72,763.95
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Solution
The fourth proportional to 129,352.53, 178,506.54 and 72,763.95 is: 100,414.28
Step by Step Solution
- Step 1: Write the proportion equation
129,352.53 : 178,506.54 = 72,763.95 : x - Step 2: Convert to fraction form
129,352.53/178,506.54 = 72,763.95/x - Step 3: Cross multiply
129,352.53x = 178,506.54 × 72,763.95 - Step 4: Simplify right side
129,352.53x = 12,988,840,951.23 - Step 5: Solve for x
x = 12,988,840,951.23/129,352.53 - Step 6: Final answer
x = 100,414.28
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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.