Finding the Fourth Proportional to 109,354.08, 163,431.94 and 79,834.08
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Solution
The fourth proportional to 109,354.08, 163,431.94 and 79,834.08 is: 119,313.69
Step by Step Solution
- Step 1: Write the proportion equation
109,354.08 : 163,431.94 = 79,834.08 : x - Step 2: Convert to fraction form
109,354.08/163,431.94 = 79,834.08/x - Step 3: Cross multiply
109,354.08x = 163,431.94 × 79,834.08 - Step 4: Simplify right side
109,354.08x = 13,047,438,572.52 - Step 5: Solve for x
x = 13,047,438,572.52/109,354.08 - Step 6: Final answer
x = 119,313.69
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.