Finding the Fourth Proportional to 122,915.17, 169,639.09 and 69,210.65
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Solution
The fourth proportional to 122,915.17, 169,639.09 and 69,210.65 is: 95,519.80
Step by Step Solution
- Step 1: Write the proportion equation
122,915.17 : 169,639.09 = 69,210.65 : x - Step 2: Convert to fraction form
122,915.17/169,639.09 = 69,210.65/x - Step 3: Cross multiply
122,915.17x = 169,639.09 × 69,210.65 - Step 4: Simplify right side
122,915.17x = 11,740,832,324.69 - Step 5: Solve for x
x = 11,740,832,324.69/122,915.17 - Step 6: Final answer
x = 95,519.80
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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.