Finding the Fourth Proportional to 121,037.80, 181,556.70 and 93,011.80
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Solution
The fourth proportional to 121,037.80, 181,556.70 and 93,011.80 is: 139,517.70
Step by Step Solution
- Step 1: Write the proportion equation
121,037.80 : 181,556.70 = 93,011.80 : x - Step 2: Convert to fraction form
121,037.80/181,556.70 = 93,011.80/x - Step 3: Cross multiply
121,037.80x = 181,556.70 × 93,011.80 - Step 4: Simplify right side
121,037.80x = 16,886,915,469.06 - Step 5: Solve for x
x = 16,886,915,469.06/121,037.80 - Step 6: Final answer
x = 139,517.70
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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.