Finding the Fourth Proportional to 161,753.49, 223,216.80 and 90,131.99
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Solution
The fourth proportional to 161,753.49, 223,216.80 and 90,131.99 is: 124,380.47
Step by Step Solution
- Step 1: Write the proportion equation
161,753.49 : 223,216.80 = 90,131.99 : x - Step 2: Convert to fraction form
161,753.49/223,216.80 = 90,131.99/x - Step 3: Cross multiply
161,753.49x = 223,216.80 × 90,131.99 - Step 4: Simplify right side
161,753.49x = 20,118,974,385.43 - Step 5: Solve for x
x = 20,118,974,385.43/161,753.49 - Step 6: Final answer
x = 124,380.47
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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.