Finding the Fourth Proportional to 106,199.36, 159,209.76 and 71,031.68
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Solution
The fourth proportional to 106,199.36, 159,209.76 and 71,031.68 is: 106,487.80
Step by Step Solution
- Step 1: Write the proportion equation
106,199.36 : 159,209.76 = 71,031.68 : x - Step 2: Convert to fraction form
106,199.36/159,209.76 = 71,031.68/x - Step 3: Cross multiply
106,199.36x = 159,209.76 × 71,031.68 - Step 4: Simplify right side
106,199.36x = 11,308,936,725.20 - Step 5: Solve for x
x = 11,308,936,725.20/106,199.36 - Step 6: Final answer
x = 106,487.80
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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.