Finding the Fourth Proportional to 156,278.13, 234,542.87 and 81,420.63
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Solution
The fourth proportional to 156,278.13, 234,542.87 and 81,420.63 is: 122,196.42
Step by Step Solution
- Step 1: Write the proportion equation
156,278.13 : 234,542.87 = 81,420.63 : x - Step 2: Convert to fraction form
156,278.13/234,542.87 = 81,420.63/x - Step 3: Cross multiply
156,278.13x = 234,542.87 × 81,420.63 - Step 4: Simplify right side
156,278.13x = 19,096,628,237.41 - Step 5: Solve for x
x = 19,096,628,237.41/156,278.13 - Step 6: Final answer
x = 122,196.42
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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.