Finding the Fourth Proportional to 211,178.99, 316,701.43 and 68,991.86
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Solution
The fourth proportional to 211,178.99, 316,701.43 and 68,991.86 is: 103,465.88
Step by Step Solution
- Step 1: Write the proportion equation
211,178.99 : 316,701.43 = 68,991.86 : x - Step 2: Convert to fraction form
211,178.99/316,701.43 = 68,991.86/x - Step 3: Cross multiply
211,178.99x = 316,701.43 × 68,991.86 - Step 4: Simplify right side
211,178.99x = 21,849,821,339.63 - Step 5: Solve for x
x = 21,849,821,339.63/211,178.99 - Step 6: Final answer
x = 103,465.88
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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.