Finding the Fourth Proportional to 191,101.40, 286,652.10 and 128,115.80
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Solution
The fourth proportional to 191,101.40, 286,652.10 and 128,115.80 is: 192,173.70
Step by Step Solution
- Step 1: Write the proportion equation
191,101.40 : 286,652.10 = 128,115.80 : x - Step 2: Convert to fraction form
191,101.40/286,652.10 = 128,115.80/x - Step 3: Cross multiply
191,101.40x = 286,652.10 × 128,115.80 - Step 4: Simplify right side
191,101.40x = 36,724,663,113.18 - Step 5: Solve for x
x = 36,724,663,113.18/191,101.40 - Step 6: Final answer
x = 192,173.70
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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.