Finding the Fourth Proportional to 145,533.14, 200,835.43 and 81,870.99
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Solution
The fourth proportional to 145,533.14, 200,835.43 and 81,870.99 is: 112,981.80
Step by Step Solution
- Step 1: Write the proportion equation
145,533.14 : 200,835.43 = 81,870.99 : x - Step 2: Convert to fraction form
145,533.14/200,835.43 = 81,870.99/x - Step 3: Cross multiply
145,533.14x = 200,835.43 × 81,870.99 - Step 4: Simplify right side
145,533.14x = 16,442,595,481.18 - Step 5: Solve for x
x = 16,442,595,481.18/145,533.14 - Step 6: Final answer
x = 112,981.80
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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.