Finding the Fourth Proportional to 87,168,445.20, 130,516,738.20 and 68,294,077.20
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Solution
The fourth proportional to 87,168,445.20, 130,516,738.20 and 68,294,077.20 is: 102,256,271.45
Step by Step Solution
- Step 1: Write the proportion equation
87,168,445.20 : 130,516,738.20 = 68,294,077.20 : x - Step 2: Convert to fraction form
87,168,445.20/130,516,738.20 = 68,294,077.20/x - Step 3: Cross multiply
87,168,445.20x = 130,516,738.20 × 68,294,077.20 - Step 4: Simplify right side
87,168,445.20x = 8,913,520,194,522,990 - Step 5: Solve for x
x = 8,913,520,194,522,990/87,168,445.20 - Step 6: Final answer
x = 102,256,271.45
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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.