Finding the Fourth Proportional to 121,285.10, 182,035.65 and 71,302.70
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Solution
The fourth proportional to 121,285.10, 182,035.65 and 71,302.70 is: 107,017.54
Step by Step Solution
- Step 1: Write the proportion equation
121,285.10 : 182,035.65 = 71,302.70 : x - Step 2: Convert to fraction form
121,285.10/182,035.65 = 71,302.70/x - Step 3: Cross multiply
121,285.10x = 182,035.65 × 71,302.70 - Step 4: Simplify right side
121,285.10x = 12,979,633,341.26 - Step 5: Solve for x
x = 12,979,633,341.26/121,285.10 - Step 6: Final answer
x = 107,017.54
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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.