Finding the Fourth Proportional to 153,213.36, 211,348.11 and 91,943.70
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Solution
The fourth proportional to 153,213.36, 211,348.11 and 91,943.70 is: 126,830.50
Step by Step Solution
- Step 1: Write the proportion equation
153,213.36 : 211,348.11 = 91,943.70 : x - Step 2: Convert to fraction form
153,213.36/211,348.11 = 91,943.70/x - Step 3: Cross multiply
153,213.36x = 211,348.11 × 91,943.70 - Step 4: Simplify right side
153,213.36x = 19,432,127,221.41 - Step 5: Solve for x
x = 19,432,127,221.41/153,213.36 - Step 6: Final answer
x = 126,830.50
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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.