Finding the Fourth Proportional to 118,072.80, 177,109.20 and 106,408.80
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Solution
The fourth proportional to 118,072.80, 177,109.20 and 106,408.80 is: 159,613.20
Step by Step Solution
- Step 1: Write the proportion equation
118,072.80 : 177,109.20 = 106,408.80 : x - Step 2: Convert to fraction form
118,072.80/177,109.20 = 106,408.80/x - Step 3: Cross multiply
118,072.80x = 177,109.20 × 106,408.80 - Step 4: Simplify right side
118,072.80x = 18,845,977,440.96 - Step 5: Solve for x
x = 18,845,977,440.96/118,072.80 - Step 6: Final answer
x = 159,613.20
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1.5x scale
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.