Finding the Fourth Proportional to 92,503.62, 138,943.41 and 81,656.10
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Solution
The fourth proportional to 92,503.62, 138,943.41 and 81,656.10 is: 122,650.09
Step by Step Solution
- Step 1: Write the proportion equation
92,503.62 : 138,943.41 = 81,656.10 : x - Step 2: Convert to fraction form
92,503.62/138,943.41 = 81,656.10/x - Step 3: Cross multiply
92,503.62x = 138,943.41 × 81,656.10 - Step 4: Simplify right side
92,503.62x = 11,345,576,981.30 - Step 5: Solve for x
x = 11,345,576,981.30/92,503.62 - Step 6: Final answer
x = 122,650.09
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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.