Finding the Fourth Proportional to 149,912,364.55, 206,879,618.61 and 87,203,509.15
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Solution
The fourth proportional to 149,912,364.55, 206,879,618.61 and 87,203,509.15 is: 120,341,165.78
Step by Step Solution
- Step 1: Write the proportion equation
149,912,364.55 : 206,879,618.61 = 87,203,509.15 : x - Step 2: Convert to fraction form
149,912,364.55/206,879,618.61 = 87,203,509.15/x - Step 3: Cross multiply
149,912,364.55x = 206,879,618.61 × 87,203,509.15 - Step 4: Simplify right side
149,912,364.55x = 18,040,628,714,405,648 - Step 5: Solve for x
x = 18,040,628,714,405,648/149,912,364.55 - Step 6: Final answer
x = 120,341,165.78
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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.