Finding the Fourth Proportional to 145,541.16, 200,846.43 and 81,878.99
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Solution
The fourth proportional to 145,541.16, 200,846.43 and 81,878.99 is: 112,992.79
Step by Step Solution
- Step 1: Write the proportion equation
145,541.16 : 200,846.43 = 81,878.99 : x - Step 2: Convert to fraction form
145,541.16/200,846.43 = 81,878.99/x - Step 3: Cross multiply
145,541.16x = 200,846.43 × 81,878.99 - Step 4: Simplify right side
145,541.16x = 16,445,101,829.27 - Step 5: Solve for x
x = 16,445,101,829.27/145,541.16 - Step 6: Final answer
x = 112,992.79
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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.