Finding the Fourth Proportional to 119,143.44, 178,658.55 and 69,237.90
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Solution
The fourth proportional to 119,143.44, 178,658.55 and 69,237.90 is: 103,823.95
Step by Step Solution
- Step 1: Write the proportion equation
119,143.44 : 178,658.55 = 69,237.90 : x - Step 2: Convert to fraction form
119,143.44/178,658.55 = 69,237.90/x - Step 3: Cross multiply
119,143.44x = 178,658.55 × 69,237.90 - Step 4: Simplify right side
119,143.44x = 12,369,942,819.05 - Step 5: Solve for x
x = 12,369,942,819.05/119,143.44 - Step 6: Final answer
x = 103,823.95
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1.5x scale
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.