Finding the Fourth Proportional to 156,989.10, 235,478.40 and 68,242.62
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Solution
The fourth proportional to 156,989.10, 235,478.40 and 68,242.62 is: 102,361.65
Step by Step Solution
- Step 1: Write the proportion equation
156,989.10 : 235,478.40 = 68,242.62 : x - Step 2: Convert to fraction form
156,989.10/235,478.40 = 68,242.62/x - Step 3: Cross multiply
156,989.10x = 235,478.40 × 68,242.62 - Step 4: Simplify right side
156,989.10x = 16,069,662,969.41 - Step 5: Solve for x
x = 16,069,662,969.41/156,989.10 - Step 6: Final answer
x = 102,361.65
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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.