Finding the Fourth Proportional to 125,220.15, 172,802.84 and 68,631.39
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Solution
The fourth proportional to 125,220.15, 172,802.84 and 68,631.39 is: 94,710.79
Step by Step Solution
- Step 1: Write the proportion equation
125,220.15 : 172,802.84 = 68,631.39 : x - Step 2: Convert to fraction form
125,220.15/172,802.84 = 68,631.39/x - Step 3: Cross multiply
125,220.15x = 172,802.84 × 68,631.39 - Step 4: Simplify right side
125,220.15x = 11,859,698,761.99 - Step 5: Solve for x
x = 11,859,698,761.99/125,220.15 - Step 6: Final answer
x = 94,710.79
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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.