Finding the Fourth Proportional to 131,452.06, 181,403.85 and 74,868.70
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Solution
The fourth proportional to 131,452.06, 181,403.85 and 74,868.70 is: 103,318.81
Step by Step Solution
- Step 1: Write the proportion equation
131,452.06 : 181,403.85 = 74,868.70 : x - Step 2: Convert to fraction form
131,452.06/181,403.85 = 74,868.70/x - Step 3: Cross multiply
131,452.06x = 181,403.85 × 74,868.70 - Step 4: Simplify right side
131,452.06x = 13,581,470,424.50 - Step 5: Solve for x
x = 13,581,470,424.50/131,452.06 - Step 6: Final answer
x = 103,318.81
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.