Finding the Fourth Proportional to 106,966.26, 147,615.62 and 63,990.09
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Solution
The fourth proportional to 106,966.26, 147,615.62 and 63,990.09 is: 88,307.63
Step by Step Solution
- Step 1: Write the proportion equation
106,966.26 : 147,615.62 = 63,990.09 : x - Step 2: Convert to fraction form
106,966.26/147,615.62 = 63,990.09/x - Step 3: Cross multiply
106,966.26x = 147,615.62 × 63,990.09 - Step 4: Simplify right side
106,966.26x = 9,445,936,489.26 - Step 5: Solve for x
x = 9,445,936,489.26/106,966.26 - Step 6: Final answer
x = 88,307.63
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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.