Finding the Fourth Proportional to 163,640.08, 245,163.48 and 74,967.76
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Solution
The fourth proportional to 163,640.08, 245,163.48 and 74,967.76 is: 112,315.74
Step by Step Solution
- Step 1: Write the proportion equation
163,640.08 : 245,163.48 = 74,967.76 : x - Step 2: Convert to fraction form
163,640.08/245,163.48 = 74,967.76/x - Step 3: Cross multiply
163,640.08x = 245,163.48 × 74,967.76 - Step 4: Simplify right side
163,640.08x = 18,379,356,929.40 - Step 5: Solve for x
x = 18,379,356,929.40/163,640.08 - Step 6: Final answer
x = 112,315.74
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.