Finding the Fourth Proportional to 100,809.22, 139,092.99 and 84,737.62
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Solution
The fourth proportional to 100,809.22, 139,092.99 and 84,737.62 is: 116,917.97
Step by Step Solution
- Step 1: Write the proportion equation
100,809.22 : 139,092.99 = 84,737.62 : x - Step 2: Convert to fraction form
100,809.22/139,092.99 = 84,737.62/x - Step 3: Cross multiply
100,809.22x = 139,092.99 × 84,737.62 - Step 4: Simplify right side
100,809.22x = 11,786,408,931.28 - Step 5: Solve for x
x = 11,786,408,931.28/100,809.22 - Step 6: Final answer
x = 116,917.97
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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.