Finding the Fourth Proportional to 153,178.08, 211,383.72 and 86,110.08
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Solution
The fourth proportional to 153,178.08, 211,383.72 and 86,110.08 is: 118,830.77
Step by Step Solution
- Step 1: Write the proportion equation
153,178.08 : 211,383.72 = 86,110.08 : x - Step 2: Convert to fraction form
153,178.08/211,383.72 = 86,110.08/x - Step 3: Cross multiply
153,178.08x = 211,383.72 × 86,110.08 - Step 4: Simplify right side
153,178.08x = 18,202,269,039.90 - Step 5: Solve for x
x = 18,202,269,039.90/153,178.08 - Step 6: Final answer
x = 118,830.77
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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.