Finding the Fourth Proportional to 133,249.77, 199,817.76 and 77,128.62
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Solution
The fourth proportional to 133,249.77, 199,817.76 and 77,128.62 is: 115,659.99
Step by Step Solution
- Step 1: Write the proportion equation
133,249.77 : 199,817.76 = 77,128.62 : x - Step 2: Convert to fraction form
133,249.77/199,817.76 = 77,128.62/x - Step 3: Cross multiply
133,249.77x = 199,817.76 × 77,128.62 - Step 4: Simplify right side
133,249.77x = 15,411,666,695.56 - Step 5: Solve for x
x = 15,411,666,695.56/133,249.77 - Step 6: Final answer
x = 115,659.99
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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.