Finding the Fourth Proportional to 138,206.54, 207,309.14 and 53,975.26
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Solution
The fourth proportional to 138,206.54, 207,309.14 and 53,975.26 is: 80,962.63
Step by Step Solution
- Step 1: Write the proportion equation
138,206.54 : 207,309.14 = 53,975.26 : x - Step 2: Convert to fraction form
138,206.54/207,309.14 = 53,975.26/x - Step 3: Cross multiply
138,206.54x = 207,309.14 × 53,975.26 - Step 4: Simplify right side
138,206.54x = 11,189,564,731.88 - Step 5: Solve for x
x = 11,189,564,731.88/138,206.54 - Step 6: Final answer
x = 80,962.63
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1.5x scale
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.