Finding the Fourth Proportional to 121,515.80, 182,273.70 and 69,027.80
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Solution
The fourth proportional to 121,515.80, 182,273.70 and 69,027.80 is: 103,541.70
Step by Step Solution
- Step 1: Write the proportion equation
121,515.80 : 182,273.70 = 69,027.80 : x - Step 2: Convert to fraction form
121,515.80/182,273.70 = 69,027.80/x - Step 3: Cross multiply
121,515.80x = 182,273.70 × 69,027.80 - Step 4: Simplify right side
121,515.80x = 12,581,952,508.86 - Step 5: Solve for x
x = 12,581,952,508.86/121,515.80 - Step 6: Final answer
x = 103,541.70
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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.