Finding the Fourth Proportional to 122,486.88, 169,038.24 and 68,769.12
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Solution
The fourth proportional to 122,486.88, 169,038.24 and 68,769.12 is: 94,904.95
Step by Step Solution
- Step 1: Write the proportion equation
122,486.88 : 169,038.24 = 68,769.12 : x - Step 2: Convert to fraction form
122,486.88/169,038.24 = 68,769.12/x - Step 3: Cross multiply
122,486.88x = 169,038.24 × 68,769.12 - Step 4: Simplify right side
122,486.88x = 11,624,611,011.15 - Step 5: Solve for x
x = 11,624,611,011.15/122,486.88 - Step 6: Final answer
x = 94,904.95
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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.