Finding the Fourth Proportional to 138,436.45, 207,702.86 and 43,681.26
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Solution
The fourth proportional to 138,436.45, 207,702.86 and 43,681.26 is: 65,537.09
Step by Step Solution
- Step 1: Write the proportion equation
138,436.45 : 207,702.86 = 43,681.26 : x - Step 2: Convert to fraction form
138,436.45/207,702.86 = 43,681.26/x - Step 3: Cross multiply
138,436.45x = 207,702.86 × 43,681.26 - Step 4: Simplify right side
138,436.45x = 9,072,722,630.40 - Step 5: Solve for x
x = 9,072,722,630.40/138,436.45 - Step 6: Final answer
x = 65,537.09
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.