Finding the Fourth Proportional to 153,702.75, 212,111.43 and 86,634.75
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Solution
The fourth proportional to 153,702.75, 212,111.43 and 86,634.75 is: 119,556.88
Step by Step Solution
- Step 1: Write the proportion equation
153,702.75 : 212,111.43 = 86,634.75 : x - Step 2: Convert to fraction form
153,702.75/212,111.43 = 86,634.75/x - Step 3: Cross multiply
153,702.75x = 212,111.43 × 86,634.75 - Step 4: Simplify right side
153,702.75x = 18,376,220,710.19 - Step 5: Solve for x
x = 18,376,220,710.19/153,702.75 - Step 6: Final answer
x = 119,556.88
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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.