Finding the Fourth Proportional to 90,503,015.80, 135,754,523.70 and 83,417,135.80
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Solution
The fourth proportional to 90,503,015.80, 135,754,523.70 and 83,417,135.80 is: 125,125,703.70
Step by Step Solution
- Step 1: Write the proportion equation
90,503,015.80 : 135,754,523.70 = 83,417,135.80 : x - Step 2: Convert to fraction form
90,503,015.80/135,754,523.70 = 83,417,135.80/x - Step 3: Cross multiply
90,503,015.80x = 135,754,523.70 × 83,417,135.80 - Step 4: Simplify right side
90,503,015.80x = 11,324,253,538,947,218 - Step 5: Solve for x
x = 11,324,253,538,947,218/90,503,015.80 - Step 6: Final answer
x = 125,125,703.70
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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.