Finding the Fourth Proportional to 139,216.21, 192,118.47 and 75,553.99
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Solution
The fourth proportional to 139,216.21, 192,118.47 and 75,553.99 is: 104,264.56
Step by Step Solution
- Step 1: Write the proportion equation
139,216.21 : 192,118.47 = 75,553.99 : x - Step 2: Convert to fraction form
139,216.21/192,118.47 = 75,553.99/x - Step 3: Cross multiply
139,216.21x = 192,118.47 × 75,553.99 - Step 4: Simplify right side
139,216.21x = 14,515,316,961.20 - Step 5: Solve for x
x = 14,515,316,961.20/139,216.21 - Step 6: Final answer
x = 104,264.56
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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.