Finding the Fourth Proportional to 138,182.60, 207,261.99 and 84,133.28
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Solution
The fourth proportional to 138,182.60, 207,261.99 and 84,133.28 is: 126,192.67
Step by Step Solution
- Step 1: Write the proportion equation
138,182.60 : 207,261.99 = 84,133.28 : x - Step 2: Convert to fraction form
138,182.60/207,261.99 = 84,133.28/x - Step 3: Cross multiply
138,182.60x = 207,261.99 × 84,133.28 - Step 4: Simplify right side
138,182.60x = 17,437,630,001.72 - Step 5: Solve for x
x = 17,437,630,001.72/138,182.60 - Step 6: Final answer
x = 126,192.67
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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.