Finding the Fourth Proportional to 145,911.14, 201,357.30 and 78,843.14
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Solution
The fourth proportional to 145,911.14, 201,357.30 and 78,843.14 is: 108,803.49
Step by Step Solution
- Step 1: Write the proportion equation
145,911.14 : 201,357.30 = 78,843.14 : x - Step 2: Convert to fraction form
145,911.14/201,357.30 = 78,843.14/x - Step 3: Cross multiply
145,911.14x = 201,357.30 × 78,843.14 - Step 4: Simplify right side
145,911.14x = 15,875,641,793.92 - Step 5: Solve for x
x = 15,875,641,793.92/145,911.14 - Step 6: Final answer
x = 108,803.49
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1.5x scale
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.