Finding the Fourth Proportional to 87,488,138.20, 131,232,207.30 and 73,458,095.80
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Solution
The fourth proportional to 87,488,138.20, 131,232,207.30 and 73,458,095.80 is: 110,187,143.70
Step by Step Solution
- Step 1: Write the proportion equation
87,488,138.20 : 131,232,207.30 = 73,458,095.80 : x - Step 2: Convert to fraction form
87,488,138.20/131,232,207.30 = 73,458,095.80/x - Step 3: Cross multiply
87,488,138.20x = 131,232,207.30 × 73,458,095.80 - Step 4: Simplify right side
87,488,138.20x = 9,640,068,055,888,858 - Step 5: Solve for x
x = 9,640,068,055,888,858/87,488,138.20 - Step 6: Final answer
x = 110,187,143.70
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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.