Finding the Fourth Proportional to 153,138.36, 211,382.55 and 104,769.21
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Solution
The fourth proportional to 153,138.36, 211,382.55 and 104,769.21 is: 144,616.82
Step by Step Solution
- Step 1: Write the proportion equation
153,138.36 : 211,382.55 = 104,769.21 : x - Step 2: Convert to fraction form
153,138.36/211,382.55 = 104,769.21/x - Step 3: Cross multiply
153,138.36x = 211,382.55 × 104,769.21 - Step 4: Simplify right side
153,138.36x = 22,146,382,771.29 - Step 5: Solve for x
x = 22,146,382,771.29/153,138.36 - Step 6: Final answer
x = 144,616.82
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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.