Finding the Fourth Proportional to 122,611.19, 169,223.49 and 102,160.80
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Solution
The fourth proportional to 122,611.19, 169,223.49 and 102,160.80 is: 140,998.61
Step by Step Solution
- Step 1: Write the proportion equation
122,611.19 : 169,223.49 = 102,160.80 : x - Step 2: Convert to fraction form
122,611.19/169,223.49 = 102,160.80/x - Step 3: Cross multiply
122,611.19x = 169,223.49 × 102,160.80 - Step 4: Simplify right side
122,611.19x = 17,288,007,117.19 - Step 5: Solve for x
x = 17,288,007,117.19/122,611.19 - Step 6: Final answer
x = 140,998.61
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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.