Finding the Fourth Proportional to 231,129,845.86, 318,950,638.98 and 125,280,988.54
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Solution
The fourth proportional to 231,129,845.86, 318,950,638.98 and 125,280,988.54 is: 172,883,130.68
Step by Step Solution
- Step 1: Write the proportion equation
231,129,845.86 : 318,950,638.98 = 125,280,988.54 : x - Step 2: Convert to fraction form
231,129,845.86/318,950,638.98 = 125,280,988.54/x - Step 3: Cross multiply
231,129,845.86x = 318,950,638.98 × 125,280,988.54 - Step 4: Simplify right side
231,129,845.86x = 39,958,451,346,879,064 - Step 5: Solve for x
x = 39,958,451,346,879,064/231,129,845.86 - Step 6: Final answer
x = 172,883,130.68
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.