Finding the Fourth Proportional to 157,306,997.79, 235,961,243.51 and 48,131,995.05
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Solution
The fourth proportional to 157,306,997.79, 235,961,243.51 and 48,131,995.05 is: 72,198,221.08
Step by Step Solution
- Step 1: Write the proportion equation
157,306,997.79 : 235,961,243.51 = 48,131,995.05 : x - Step 2: Convert to fraction form
157,306,997.79/235,961,243.51 = 48,131,995.05/x - Step 3: Cross multiply
157,306,997.79x = 235,961,243.51 × 48,131,995.05 - Step 4: Simplify right side
157,306,997.79x = 11,357,285,404,374,504 - Step 5: Solve for x
x = 11,357,285,404,374,504/157,306,997.79 - Step 6: Final answer
x = 72,198,221.08
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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.