Finding the Fourth Proportional to 138,105.60, 207,271.80 and 71,566.08
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Solution
The fourth proportional to 138,105.60, 207,271.80 and 71,566.08 is: 107,407.88
Step by Step Solution
- Step 1: Write the proportion equation
138,105.60 : 207,271.80 = 71,566.08 : x - Step 2: Convert to fraction form
138,105.60/207,271.80 = 71,566.08/x - Step 3: Cross multiply
138,105.60x = 207,271.80 × 71,566.08 - Step 4: Simplify right side
138,105.60x = 14,833,630,220.54 - Step 5: Solve for x
x = 14,833,630,220.54/138,105.60 - Step 6: Final answer
x = 107,407.88
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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.