Finding the Fourth Proportional to 119,261.76, 178,658.56 and 69,236.96
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Solution
The fourth proportional to 119,261.76, 178,658.56 and 69,236.96 is: 103,719.55
Step by Step Solution
- Step 1: Write the proportion equation
119,261.76 : 178,658.56 = 69,236.96 : x - Step 2: Convert to fraction form
119,261.76/178,658.56 = 69,236.96/x - Step 3: Cross multiply
119,261.76x = 178,658.56 × 69,236.96 - Step 4: Simplify right side
119,261.76x = 12,369,775,572.38 - Step 5: Solve for x
x = 12,369,775,572.38/119,261.76 - Step 6: Final answer
x = 103,719.55
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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.