Finding the Fourth Proportional to 168,021.80, 252,032.70 and 105,813.80
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Solution
The fourth proportional to 168,021.80, 252,032.70 and 105,813.80 is: 158,720.70
Step by Step Solution
- Step 1: Write the proportion equation
168,021.80 : 252,032.70 = 105,813.80 : x - Step 2: Convert to fraction form
168,021.80/252,032.70 = 105,813.80/x - Step 3: Cross multiply
168,021.80x = 252,032.70 × 105,813.80 - Step 4: Simplify right side
168,021.80x = 26,668,537,711.26 - Step 5: Solve for x
x = 26,668,537,711.26/168,021.80 - Step 6: Final answer
x = 158,720.70
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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.