Finding the Fourth Proportional to 157,059.68, 216,739.80 and 85,441.50
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Solution
The fourth proportional to 157,059.68, 216,739.80 and 85,441.50 is: 117,907.88
Step by Step Solution
- Step 1: Write the proportion equation
157,059.68 : 216,739.80 = 85,441.50 : x - Step 2: Convert to fraction form
157,059.68/216,739.80 = 85,441.50/x - Step 3: Cross multiply
157,059.68x = 216,739.80 × 85,441.50 - Step 4: Simplify right side
157,059.68x = 18,518,573,621.70 - Step 5: Solve for x
x = 18,518,573,621.70/157,059.68 - Step 6: Final answer
x = 117,907.88
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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.