Finding the Fourth Proportional to 121,013.70, 181,520.55 and 68,525.70
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Solution
The fourth proportional to 121,013.70, 181,520.55 and 68,525.70 is: 102,788.55
Step by Step Solution
- Step 1: Write the proportion equation
121,013.70 : 181,520.55 = 68,525.70 : x - Step 2: Convert to fraction form
121,013.70/181,520.55 = 68,525.70/x - Step 3: Cross multiply
121,013.70x = 181,520.55 × 68,525.70 - Step 4: Simplify right side
121,013.70x = 12,438,822,753.14 - Step 5: Solve for x
x = 12,438,822,753.14/121,013.70 - Step 6: Final answer
x = 102,788.55
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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.