Finding the Fourth Proportional to 213,023,177.80, 319,534,766.70 and 91,854,629.80
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Solution
The fourth proportional to 213,023,177.80, 319,534,766.70 and 91,854,629.80 is: 137,781,944.70
Step by Step Solution
- Step 1: Write the proportion equation
213,023,177.80 : 319,534,766.70 = 91,854,629.80 : x - Step 2: Convert to fraction form
213,023,177.80/319,534,766.70 = 91,854,629.80/x - Step 3: Cross multiply
213,023,177.80x = 319,534,766.70 × 91,854,629.80 - Step 4: Simplify right side
213,023,177.80x = 29,350,747,703,457,864 - Step 5: Solve for x
x = 29,350,747,703,457,864/213,023,177.80 - Step 6: Final answer
x = 137,781,944.70
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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.