Finding the Fourth Proportional to 145,901.63, 201,344.19 and 78,833.63
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Solution
The fourth proportional to 145,901.63, 201,344.19 and 78,833.63 is: 108,790.38
Step by Step Solution
- Step 1: Write the proportion equation
145,901.63 : 201,344.19 = 78,833.63 : x - Step 2: Convert to fraction form
145,901.63/201,344.19 = 78,833.63/x - Step 3: Cross multiply
145,901.63x = 201,344.19 × 78,833.63 - Step 4: Simplify right side
145,901.63x = 15,872,693,377.11 - Step 5: Solve for x
x = 15,872,693,377.11/145,901.63 - Step 6: Final answer
x = 108,790.38
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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.