Finding the Fourth Proportional to 118,085.80, 177,128.70 and 106,421.80
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Solution
The fourth proportional to 118,085.80, 177,128.70 and 106,421.80 is: 159,632.70
Step by Step Solution
- Step 1: Write the proportion equation
118,085.80 : 177,128.70 = 106,421.80 : x - Step 2: Convert to fraction form
118,085.80/177,128.70 = 106,421.80/x - Step 3: Cross multiply
118,085.80x = 177,128.70 × 106,421.80 - Step 4: Simplify right side
118,085.80x = 18,850,355,085.66 - Step 5: Solve for x
x = 18,850,355,085.66/118,085.80 - Step 6: Final answer
x = 159,632.70
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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.