Finding the Fourth Proportional to 145,528.14, 200,828.55 and 81,865.99
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Solution
The fourth proportional to 145,528.14, 200,828.55 and 81,865.99 is: 112,974.90
Step by Step Solution
- Step 1: Write the proportion equation
145,528.14 : 200,828.55 = 81,865.99 : x - Step 2: Convert to fraction form
145,528.14/200,828.55 = 81,865.99/x - Step 3: Cross multiply
145,528.14x = 200,828.55 × 81,865.99 - Step 4: Simplify right side
145,528.14x = 16,441,026,652.54 - Step 5: Solve for x
x = 16,441,026,652.54/145,528.14 - Step 6: Final answer
x = 112,974.90
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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.