Finding the Fourth Proportional to 121,285.10, 167,378.58 and 67,570.08
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Solution
The fourth proportional to 121,285.10, 167,378.58 and 67,570.08 is: 93,249.58
Step by Step Solution
- Step 1: Write the proportion equation
121,285.10 : 167,378.58 = 67,570.08 : x - Step 2: Convert to fraction form
121,285.10/167,378.58 = 67,570.08/x - Step 3: Cross multiply
121,285.10x = 167,378.58 × 67,570.08 - Step 4: Simplify right side
121,285.10x = 11,309,784,040.89 - Step 5: Solve for x
x = 11,309,784,040.89/121,285.10 - Step 6: Final answer
x = 93,249.58
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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.