Finding the Fourth Proportional to 106,828.24, 147,442.68 and 68,635.53
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Solution
The fourth proportional to 106,828.24, 147,442.68 and 68,635.53 is: 94,729.69
Step by Step Solution
- Step 1: Write the proportion equation
106,828.24 : 147,442.68 = 68,635.53 : x - Step 2: Convert to fraction form
106,828.24/147,442.68 = 68,635.53/x - Step 3: Cross multiply
106,828.24x = 147,442.68 × 68,635.53 - Step 4: Simplify right side
106,828.24x = 10,119,806,071.74 - Step 5: Solve for x
x = 10,119,806,071.74/106,828.24 - Step 6: Final answer
x = 94,729.69
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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.