Finding the Fourth Proportional to 155,789.35, 214,737.45 and 121,738.67
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Solution
The fourth proportional to 155,789.35, 214,737.45 and 121,738.67 is: 167,802.56
Step by Step Solution
- Step 1: Write the proportion equation
155,789.35 : 214,737.45 = 121,738.67 : x - Step 2: Convert to fraction form
155,789.35/214,737.45 = 121,738.67/x - Step 3: Cross multiply
155,789.35x = 214,737.45 × 121,738.67 - Step 4: Simplify right side
155,789.35x = 26,141,851,562.19 - Step 5: Solve for x
x = 26,141,851,562.19/155,789.35 - Step 6: Final answer
x = 167,802.56
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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.