Finding the Fourth Proportional to 153,351.93, 211,620.70 and 85,366.68
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Solution
The fourth proportional to 153,351.93, 211,620.70 and 85,366.68 is: 117,803.26
Step by Step Solution
- Step 1: Write the proportion equation
153,351.93 : 211,620.70 = 85,366.68 : x - Step 2: Convert to fraction form
153,351.93/211,620.70 = 85,366.68/x - Step 3: Cross multiply
153,351.93x = 211,620.70 × 85,366.68 - Step 4: Simplify right side
153,351.93x = 18,065,356,578.28 - Step 5: Solve for x
x = 18,065,356,578.28/153,351.93 - Step 6: Final answer
x = 117,803.26
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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.