Finding the Fourth Proportional to 120,195,015.70, 180,292,523.55 and 74,845,383.70
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Solution
The fourth proportional to 120,195,015.70, 180,292,523.55 and 74,845,383.70 is: 112,268,075.55
Step by Step Solution
- Step 1: Write the proportion equation
120,195,015.70 : 180,292,523.55 = 74,845,383.70 : x - Step 2: Convert to fraction form
120,195,015.70/180,292,523.55 = 74,845,383.70/x - Step 3: Cross multiply
120,195,015.70x = 180,292,523.55 × 74,845,383.70 - Step 4: Simplify right side
120,195,015.70x = 13,494,063,103,341,038 - Step 5: Solve for x
x = 13,494,063,103,341,038/120,195,015.70 - Step 6: Final answer
x = 112,268,075.55
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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.