Finding the Fourth Proportional to 121,258.20, 181,887.30 and 91,733.70
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Solution
The fourth proportional to 121,258.20, 181,887.30 and 91,733.70 is: 137,600.55
Step by Step Solution
- Step 1: Write the proportion equation
121,258.20 : 181,887.30 = 91,733.70 : x - Step 2: Convert to fraction form
121,258.20/181,887.30 = 91,733.70/x - Step 3: Cross multiply
121,258.20x = 181,887.30 × 91,733.70 - Step 4: Simplify right side
121,258.20x = 16,685,195,012.01 - Step 5: Solve for x
x = 16,685,195,012.01/121,258.20 - Step 6: Final answer
x = 137,600.55
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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.