Finding the Fourth Proportional to 131,679,203.96, 181,780,314.02 and 87,699,392.12
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Solution
The fourth proportional to 131,679,203.96, 181,780,314.02 and 87,699,392.12 is: 121,067,127.99
Step by Step Solution
- Step 1: Write the proportion equation
131,679,203.96 : 181,780,314.02 = 87,699,392.12 : x - Step 2: Convert to fraction form
131,679,203.96/181,780,314.02 = 87,699,392.12/x - Step 3: Cross multiply
131,679,203.96x = 181,780,314.02 × 87,699,392.12 - Step 4: Simplify right side
131,679,203.96x = 15,942,023,038,936,716 - Step 5: Solve for x
x = 15,942,023,038,936,716/131,679,203.96 - Step 6: Final answer
x = 121,067,127.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.