Finding the Fourth Proportional to 145,721.19, 201,098.67 and 81,194.79
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Solution
The fourth proportional to 145,721.19, 201,098.67 and 81,194.79 is: 112,050.72
Step by Step Solution
- Step 1: Write the proportion equation
145,721.19 : 201,098.67 = 81,194.79 : x - Step 2: Convert to fraction form
145,721.19/201,098.67 = 81,194.79/x - Step 3: Cross multiply
145,721.19x = 201,098.67 × 81,194.79 - Step 4: Simplify right side
145,721.19x = 16,328,164,279.93 - Step 5: Solve for x
x = 16,328,164,279.93/145,721.19 - Step 6: Final answer
x = 112,050.72
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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.