Finding the Fourth Proportional to 125,228.19, 172,814.94 and 68,643.21
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Solution
The fourth proportional to 125,228.19, 172,814.94 and 68,643.21 is: 94,727.65
Step by Step Solution
- Step 1: Write the proportion equation
125,228.19 : 172,814.94 = 68,643.21 : x - Step 2: Convert to fraction form
125,228.19/172,814.94 = 68,643.21/x - Step 3: Cross multiply
125,228.19x = 172,814.94 × 68,643.21 - Step 4: Simplify right side
125,228.19x = 11,862,571,874.34 - Step 5: Solve for x
x = 11,862,571,874.34/125,228.19 - Step 6: Final answer
x = 94,727.65
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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.