Finding the Fourth Proportional to 153,206.68, 211,356.12 and 89,515.84
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Solution
The fourth proportional to 153,206.68, 211,356.12 and 89,515.84 is: 123,491.49
Step by Step Solution
- Step 1: Write the proportion equation
153,206.68 : 211,356.12 = 89,515.84 : x - Step 2: Convert to fraction form
153,206.68/211,356.12 = 89,515.84/x - Step 3: Cross multiply
153,206.68x = 211,356.12 × 89,515.84 - Step 4: Simplify right side
153,206.68x = 18,919,720,620.94 - Step 5: Solve for x
x = 18,919,720,620.94/153,206.68 - Step 6: Final answer
x = 123,491.49
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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.