Finding the Fourth Proportional to 121,491,889.12, 167,680,631.55 and 68,584,723.23
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Solution
The fourth proportional to 121,491,889.12, 167,680,631.55 and 68,584,723.23 is: 94,659,238.49
Step by Step Solution
- Step 1: Write the proportion equation
121,491,889.12 : 167,680,631.55 = 68,584,723.23 : x - Step 2: Convert to fraction form
121,491,889.12/167,680,631.55 = 68,584,723.23/x - Step 3: Cross multiply
121,491,889.12x = 167,680,631.55 × 68,584,723.23 - Step 4: Simplify right side
121,491,889.12x = 11,500,329,705,831,150 - Step 5: Solve for x
x = 11,500,329,705,831,150/121,491,889.12 - Step 6: Final answer
x = 94,659,238.49
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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.