Finding the Fourth Proportional to 140,250,742.80, 193,542,309 and 78,371,589.84
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Solution
The fourth proportional to 140,250,742.80, 193,542,309 and 78,371,589.84 is: 108,150,717.46
Step by Step Solution
- Step 1: Write the proportion equation
140,250,742.80 : 193,542,309 = 78,371,589.84 : x - Step 2: Convert to fraction form
140,250,742.80/193,542,309 = 78,371,589.84/x - Step 3: Cross multiply
140,250,742.80x = 193,542,309 × 78,371,589.84 - Step 4: Simplify right side
140,250,742.80x = 15,168,218,457,634,542 - Step 5: Solve for x
x = 15,168,218,457,634,542/140,250,742.80 - Step 6: Final answer
x = 108,150,717.46
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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.