Finding the Fourth Proportional to 122,811.88, 169,479.19 and 68,363.18
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Solution
The fourth proportional to 122,811.88, 169,479.19 and 68,363.18 is: 94,340.52
Step by Step Solution
- Step 1: Write the proportion equation
122,811.88 : 169,479.19 = 68,363.18 : x - Step 2: Convert to fraction form
122,811.88/169,479.19 = 68,363.18/x - Step 3: Cross multiply
122,811.88x = 169,479.19 × 68,363.18 - Step 4: Simplify right side
122,811.88x = 11,586,136,669.53 - Step 5: Solve for x
x = 11,586,136,669.53/122,811.88 - Step 6: Final answer
x = 94,340.52
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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.